Vocabulary

  • for example: As an illustration or instance.
  • have to: Must do
  • at least: As a minimum
  • consist of
  • depending on: To rely on for support (financial or emotional)
  • just kind of: Used to express a feeling or state in a vague or hesitant way.
  • next to: Being located along side another
  • fill up
  • in other words: Stating something in a different way, often to make it clearer or more understandable.
  • for now: Temporarily; for the present time.
  • from top to bottom: Completely or thoroughly; in every part.
  • of course: Sure ; Certainly
  • look at: To use your eyes to focus on something
  • move around: To change position or location; to go from place to place.
  • along with: In addition to; together with.
  • balance out: To make or become more equal to another thing
  • add up to: To amount to a particular sum or total.
  • think of: To look on as (being something specific); consider
  • for the main: Intended for the primary or main person or thing.
  • except for: Not including; excluding.
  • in with: Fashionable or popular at the moment.
  • fall apart: To suffer a nervous breakdown
  • symbol of: Something that represents or stands for something else, especially an object representing an abstract idea.
  • have at: To attack someone or something.
  • put together: To build or assemble something small, e.g. a toy
  • in the first place: To begin with; as the first point or consideration.
  • roll down: To move downwards by turning over and over.
  • by itself: Alone; without help or assistance.
  • think back: To recapture the past
  • go downhill: To gradually decline in quality, health, or condition.
  • see in: To accompany someone to the entrance of a building or room.
  • instead of: When one thing is replaced by another
  • interact with
  • pull apart: To separate something into pieces, often forcefully.
  • break apart: To separate into pieces; disintegrate.
  • lead to: To result in some action
  • such as: For example; like
  • move to: To change the place where you live or work.
  • back down: To admit you were wrong; stop claiming
  • going on: To continue doing something
  • based on: To use something as the foundation or starting point for something else.
  • balance it out: To equalize or compensate for something, often to create a sense of fairness or equilibrium.
  • rule of thumb: A practical and approximate way of doing or measuring something.
  • as a rule: Generally; usually
  • on fire: Very successful or popular
  • used up: To use all of; consume
  • in phase: Occurring at the same time or in a synchronized manner; having matching cycles.
  • throw away: To fail to take advantage of a good chance
  • pick it up: To lift something from a surface.
  • turn into: To change to become something else
  • consists of: Is made up or composed of.
  • in circles: Moving or going around and around; not progressing.
  • thanks to: Because of; as a result of.
  • look for: To try to find a thing or person that is lost
  • write down: To record in writing
  • figure out: To understand the behavior of someone
  • thumbs up: A gesture of approval or agreement, indicated by holding a fist with the thumb extended upwards.
  • positive: Showing agreement or support for something
  • negative: The opposite to a positive electrical charge
  • spontaneous: Happening on its own, without anyone helping it
  • solid: Being able to be trusted; reliable
  • amount: Quantity of something
  • measure: Plan to achieve a desired result
  • molecule: Two or more atoms chemically combined
  • neutral: Something with pH value of 7
  • exist: To be present, alive or real
  • bond: Rope, chain or other thing used to tie someone up
  • concentration: Amount or number of something in a thing or place
  • spontaneously: In a sudden, unplanned way
  • state: Region within a country, with its own government
  • similar: Nearly the same; alike
  • form: Sports team or person's current winning record
  • define: To explain the meaning of words
  • charge: To run quickly toward someone to attack them
  • release: To free someone from a responsibility or burden
  • reaction: Bodily response to a drug or something eaten
  • core: To take out the central section of a fruit
  • compare: To consider how similar and different things are
  • pretty: Being attractive to the eye in a simple way
  • create: To make, cause, or bring into existence
  • mass: Religious ceremony in some Christian churches
  • oxygen: A gas in the air that we need to breathe
  • dissolve: To cause something to end
  • element: Essential or particular part of something
  • energy: Physical or mental strength
  • leave: To go away from; depart
  • grid: Electrical network supplying electricity to area
  • react: To change when mixing with other chemicals
  • sodium: A soft, white chemical element
  • noble: Being admirable and honorable in character
  • bottom: The part of your body you sit on
  • chemical: Basic substance produced by mixing elements
  • depend: Be controlled or determined by (someone/something)
  • log: To move a certain distance or speed, as recorded
  • place: To put someone in a particular type of situation
  • important: Having power or authority
  • kind: In a caring and helpful manner
  • hydrogen: Lightest of all chemical elements
  • quantum: The smallest unit or amount of energy
  • fill: To make something full
  • change: To exchange one set of clothes for another
  • shell: Hard outer cover of an egg, fruit, nut, or seed
  • equilibrium: A state of balance or harmony
  • configuration: A shape or outline; a method of arrangement
  • polar: Concerning the areas near the North or South poles
  • atom: Smallest bit that matter can be broken down into
  • acidic: Containing acid
  • tug: To pull (something) hard or suddenly
  • homogeneous: Being all of the same type
  • chlorine: Greenish-yellow gas with a strong smell
  • entropy: Lack of order in a system
  • oxidation: Process of combining with oxygen
  • proton: Tiny part of atom with positive electrical charge
  • electron: A negatively charged particle
  • orbital: Concerning an orbit
  • ion: Atoms with either a positive or negative charge
  • valence: Relative capacity that interact with antigens
  • ph: Acidity or alkalinity value of a solution
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  • not found vocabularyNo vocabulary matches your filters
    • acidic

      US /əˈsÉȘdÉȘk/

      UK /əˈsÉȘdÉȘk/

      • Adjective
      • Containing acid
      B1
      More
    • add up to

      US /ĂŠd ʌp tu/

      UK /ĂŠd ʌp tu:/

      • Phrasal Verb
      • To amount to a particular sum or total.
      • To have a particular result or effect; to be equal to.
      A2
      More
    • along with

      US /əˈlɔƋ wÉȘð/

      UK /əˈlɔƋ wið/

      • Preposition
      • In addition to; together with.
      • Adverb
      • In company or together with someone or something.
      • Including; in addition to.
      A2
      More
    • as a rule

      US /ĂŠz e rul/

      UK /éz ə ru:l/

      • Phrase
      • Generally; usually
      B1
      More
    • at least

      US /ĂŠt list/

      UK /ĂŠt li:st/

      • Adverb
      • As a minimum
      • Not less than
      • Phrase
      • No less than; at the minimum
      • Used to indicate that something is positive in a bad situation.
      C2
      More
    • atom

      US /ˈétəm/

      UK /'étəm/

      • Noun
      • Smallest bit that matter can be broken down into
      B1
      More
    • back down

      US /bĂŠk daʊn/

      UK /bĂŠk daun/

      • Phrasal Verb
      • To admit you were wrong; stop claiming
      A1
      More
    • balance it out

      US

      UK

      • Phrasal Verb
      • To equalize or compensate for something, often to create a sense of fairness or equilibrium.
      A1
      More
    • balance out

      US /ˈbĂŠləns aʊt/

      UK /ˈbéləns aut/

      • Phrasal Verb
      • To make or become more equal to another thing
      A2
      More
    • based on

      US

      UK

      • Phrasal Verb
      • To use something as the foundation or starting point for something else.
      • Preposition
      • Using something as the main idea or foundation.
      • Relying on something as evidence or justification.
      A1
      More
    • bond

      US /bɑnd/

      UK /bɒnd/

      • Noun (Countable/Uncountable)
      • Rope, chain or other thing used to tie someone up
      • Closeness that is shared between people or groups
      • Verb (Transitive/Intransitive)
      • To develop a close relationship with
      • To become joined or connected, e.g. using glue
      A2TOEIC
      More
    • bottom

      US /ˈbɑtəm/

      UK /'bɒtəm/

      • Noun
      • The part of your body you sit on
      • Lowest position, often in a company or contest
      • Verb (Transitive/Intransitive)
      • To hit the lowest part of something
      • To provide with a bottom.
      A2TOEIC
      More
    • break apart

      US

      UK

      • Phrasal Verb
      • To separate into pieces; disintegrate.
      • To end a relationship or association.
      A2
      More
    • by itself

      US /baÉȘ ÉȘtˈsɛlf/

      UK /bai itˈself/

      • Adverb
      • Alone; without help or assistance.
      • Without any external influence or aid.
      A2
      More
    • charge

      US /tʃɑrdʒ/

      UK /tʃɑ:dʒ/

      • Verb (Transitive/Intransitive)
      • To run quickly toward someone to attack them
      • To ask for money as a price for a service or goods
      • Noun (Countable/Uncountable)
      • An attack by running quickly toward someone
      • A price for a service or goods
      A2
      More
    • chemical

      US /ˈkɛmÉȘkəl/

      UK /ˈkemÉȘkl/

      • Noun (Countable/Uncountable)
      • Basic substance produced by mixing elements
      • The branch of science concerned with the substances of which matter is composed, the investigation of their properties and reactions, and the use of such reactions to form new substances.
      • Adjective
      • Made of various elements
      A2
      More
    • chlorine

      US /ˈklɔːrˌiːn/

      UK /ˈklɔ:ri:n/

      • Uncountable Noun
      • Greenish-yellow gas with a strong smell
      B2
      More
    • concentration

      US /ˌkɑ:nsnˈtreÉȘʃn/

      UK /ˌkɒnsnˈtreÉȘʃn/

      • Noun (Countable/Uncountable)
      • Amount or number of something in a thing or place
      • Paying (a lot of) attention to a task
      A2
      More
    • configuration

      US /kənˌfÉȘÉĄjəˈreʃən/

      UK /kənˌfÉȘgəˈreÉȘʃn/

      • Noun
      • A shape or outline; a method of arrangement
      B2
      More
    • consist of

      US /kənˈsÉȘst ʌv/

      UK /kənˈsist ɔv/

      • Phrasal Verb
      A2
      More
    • consists of

      US

      UK

      • Phrasal Verb
      • Is made up or composed of.
      A1
      More
    • core

      US /kɔr, kor/

      UK /kɔ:(r)/

      • Transitive Verb
      • To take out the central section of a fruit
      • Noun (Countable/Uncountable)
      • Important central part of something
      • The hard central part of certain fruits, containing the seeds.
      A2
      More
    • define

      US /dÉȘˈfaÉȘn/

      UK /dÉȘ'faÉȘn/

      • Transitive Verb
      • To explain the meaning of words
      • To set or mark the limits of something
      A2TOEIC
      More
    • depend

      US /dÉȘˈpend/

      UK /dÉȘˈpend/

      • Verb (Transitive/Intransitive)
      • Be controlled or determined by (someone/something)
      • To rely on someone or something for support, help, or existence.
      B1TOEIC
      More
    • depending on

      US

      UK

      • Phrasal Verb
      • To rely on for support (financial or emotional)
      • Influenced or determined by.
      • Preposition
      • Subject to; contingent on
      • Relying on someone or something for support or assistance.
      A2
      More
    • dissolve

      US /dÉȘˈzɑ:lv/

      UK /dÉȘˈzɒlv/

      • Verb (Transitive/Intransitive)
      • To cause something to end
      • To dismiss, e.g. a law-making body
      B2
      More
    • electron

      US /ÉȘˈlektrɑ:n/

      UK /ÉȘˈlektrɒn/

      • Countable Noun
      • A negatively charged particle
      B2
      More
    • element

      US /ˈɛləmənt/

      UK /'elÉȘmənt/

      • Noun (Countable/Uncountable)
      • Essential or particular part of something
      • A substance that cannot be broken down into simpler substances by chemical means.
      A2TOEIC
      More
    • energy

      US /ˈɛnədʒi/

      UK /'enədʒÉȘ/

      • Noun (Countable/Uncountable)
      • Physical or mental strength
      • Enthusiasm and determination.
      A2
      More
    • entropy

      US /ˈɛntrəpi/

      UK /ˈentrəpi/

      • Uncountable Noun
      • Lack of order in a system
      C1
      More
    • equilibrium

      US /ˌikwəˈlÉȘbriəm, ˌɛkwə-/

      UK /ˌi:kwÉȘˈlÉȘbriəm/

      • Noun (Countable/Uncountable)
      • A state of balance or harmony
      • Calm, quiet, undisturbed emotional state
      C2TOEIC
      More
    • except for

      US /ÉȘkˈsɛpt fɔr/

      UK /ikˈsept fɔ:/

      • Preposition
      • Not including; excluding.
      More
    • fall apart

      US /fɔl əˈpɑrt/

      UK /fɔ:l əˈpɑ:t/

      • Phrasal Verb
      • To suffer a nervous breakdown
      • To break into pieces; stop functioning
      A1
      More
    • figure out

      US /ˈfÉȘÉĄjɚ aʊt/

      UK /ˈfiɡə aut/

      • Phrasal Verb
      • To understand the behavior of someone
      • To think through logically to find a solution
      • Verb (Transitive/Intransitive)
      • To understand or find an answer to something.
      • To find a solution to a problem or understand something.
      A1
      More
    • fill up

      US /fÉȘl ʌp/

      UK /fil ʌp/

      • Phrase
      • Verb (Transitive/Intransitive)
      • To make something full.
      • To become full.
      A1
      More
    • for example

      US

      UK

      • Phrase
      • As an illustration or instance.
      More
    • for now

      US /fɔr naʊ/

      UK /fɔ: nau/

      • Phrase
      • Temporarily; for the present time.
      • In the short term; for the immediate future.
      A1
      More
    • for the main

      US /fɚ ðə meÉȘn/

      UK /fə ðə meÉȘn/

      • other
      • Intended for the primary or main person or thing.
      C2
      More
    • from top to bottom

      US /frəm tɑp tu ˈbɑtəm/

      UK /frəm tɒp tə ˈbɒtəm/

      • other
      • Completely or thoroughly; in every part.
      B1
      More
    • go downhill

      US

      UK

      • Phrasal Verb
      • To gradually decline in quality, health, or condition.
      C2
      More
    • going on

      US /ˈɥoÉȘƋ ɑn/

      UK /ˈgəʊÉȘƋ ɔn/

      • Phrasal Verb
      • To continue doing something
      • To happen (usually negative)
      A1
      More
    • grid

      US /ÉĄrÉȘd/

      UK /ÉĄrÉȘd/

      • Noun
      • Electrical network supplying electricity to area
      • Metal structure with bars used to cover a hole
      • Transitive Verb
      • To mark with a grid.
      B2
      More
    • have at

      US

      UK

      • Phrasal Verb
      • To attack someone or something.
      • To begin doing something with enthusiasm.
      A1
      More
    • have to

      US /hĂŠv tu/

      UK /ˈhév tə/

      • Auxiliary Verb
      • Must do
      A1
      More
    • homogeneous

      US /ˌhoməˈdʒiniəs, -ˈdʒinjəs/

      UK /ˌhɒmə'dʒi:nÉȘəs/

      • Adjective
      • Being all of the same type
      B1
      More
    • hydrogen

      US /ˈhaÉȘdrədʒən/

      UK /ˈhaÉȘdrədʒən/

      • Uncountable Noun
      • Lightest of all chemical elements
      B1
      More
    • in circles

      US

      UK

      • Phrase
      • Moving or going around and around; not progressing.
      • To discuss something without making any progress or reaching a conclusion.
      A2
      More
    • in other words

      US

      UK

      • Phrase
      • Stating something in a different way, often to make it clearer or more understandable.
      More
    • in phase

      US /ÉȘn fez/

      UK /in feiz/

      • Adjective
      • Occurring at the same time or in a synchronized manner; having matching cycles.
      • Phrase
      • In agreement or harmony; working together effectively.
      A1
      More
    • in the first place

      US

      UK

      • Phrase
      • To begin with; as the first point or consideration.
      • From the beginning; initially.
      A1
      More
    • in with

      US /ÉȘn wÉȘð/

      UK /in wið/

      • Phrase
      • Fashionable or popular at the moment.
      • Having influence or favor with someone.
      • Phrasal Verb
      • To introduce or bring something new into a system or organization.
      A1
      More
    • instead of

      US /ÉȘnˈstɛd ʌv/

      UK /inˈsted ɔv/

      • Preposition
      • When one thing is replaced by another
      • Adverb
      • As a substitute or alternative.
      A1
      More
    • interact with

      US /ˌÉȘntɚˈékt wÉȘð/

      UK /ˌÉȘntərˈÊkt wið/

      • Phrase
      • Verb (Transitive/Intransitive)
      • To engage in communication or action involving mutual or reciprocal influence.
      • To use a computer interface to achieve a specific goal.
      A2
      More
    • ion

      US /ˈaÉȘən/

      UK /'aÉȘən/

      • Noun (Countable/Uncountable)
      • Atoms with either a positive or negative charge
      B2
      More
    • just kind of

      US

      UK

      • Phrase
      • Used to express a feeling or state in a vague or hesitant way.
      • Used to indicate something is approximately or generally similar to something else.
      A2
      More
    • lead to

      US /lid tu/

      UK /li:d tu:/

      • Phrasal Verb
      • To result in some action
      • Verb (Transitive/Intransitive)
      • To have something as a consequence or result.
      A1
      More
    • log

      US /lɔ:g/

      UK /lɒg/

      • Verb (Transitive/Intransitive)
      • To move a certain distance or speed, as recorded
      • To leave a website or computer account
      • Noun (Countable/Uncountable)
      • Detailed account of events and progress on journey
      • Piece of a tree that has fallen or been cut
      B1
      More
    • look at

      US /lʊk ĂŠt/

      UK /luk ĂŠt/

      • Phrasal Verb
      • To use your eyes to focus on something
      • To focus your eyes on something carefully
      A1
      More
    • look for

      US /lʊk fɔr/

      UK /luk fɔ:/

      • Phrasal Verb
      • To try to find a thing or person that is lost
      • To expect or anticipate something.
      A1
      More
    • mass

      US /mĂŠs/

      UK /mĂŠs/

      • Noun (Countable/Uncountable)
      • Religious ceremony in some Christian churches
      • Large amount or number of something
      • Transitive Verb
      • To gather people or things into a large group
      B1
      More
    • molecule

      US /ˈmɑlÉȘˌkjul/

      UK /ˈmɒlÉȘkju:l/

      • Noun
      • Two or more atoms chemically combined
      B2
      More
    • move around

      US /muv əˈraʊnd/

      UK /mu:v əˈraund/

      • Phrasal Verb
      • To change position or location; to go from place to place.
      • Intransitive Verb
      • To spread or circulate (e.g., information, rumors).
      More
    • move to

      US /muv tu/

      UK /mu:v tu:/

      • Phrasal Verb
      • To change the place where you live or work.
      • Verb (Transitive/Intransitive)
      • To proceed to the next stage or action.
      A2
      More
    • negative

      US /ˈnɛɡətÉȘv/

      UK /'neɡətÉȘv/

      • Noun
      • The opposite to a positive electrical charge
      • In grammar, containing words such as 'no' or 'not'
      • Adjective
      • Being harmful, unwanted or unhelpful
      • In mathematics, being less than zero
      A2
      More
    • neutral

      US /ˈnu:trəl/

      UK /ˈnju:trəl/

      • Adjective
      • Something with pH value of 7
      • Having no positive or negative electrical charge
      • Noun (Countable/Uncountable)
      • Color that is dull and not bright, such as gray
      • The rest position for gears in a car or vehicle
      B1
      More
    • next to

      US /nɛkst tu/

      UK /nekst tu:/

      • Preposition
      • Being located along side another
      • In comparison with
      • Adverb
      • Almost; nearly
      A1
      More
    • noble

      US /'noʊbl/

      UK /'nəʊbl/

      • Adjective
      • Being admirable and honorable in character
      • Concerning or being a member a high social class
      • Countable Noun
      • Titled peer of the realm e.g. a lord, duke
      B1
      More
    • of course

      US /ʌv kɔː(r)s/

      UK /ɔv kɔː(r)s/

      • Adverb
      • Sure ; Certainly
      • Phrase
      • For sure; certainly
      A2
      More
    • on fire

      US /ɑn faÉȘr/

      UK /ɔn ˈfaiə/

      • Adjective
      • Very successful or popular
      • Burning
      A2
      More
    • orbital

      US /ˈɔrbÉȘtl:/

      UK /ˈɔ:bÉȘtl/

      • Adjective
      • Concerning an orbit
      B2
      More
    • oxidation

      US /ˌɑksÉȘˈdeʃən/

      UK /ˌɒksÉȘ'deÉȘʃn/

      • Uncountable Noun
      • Process of combining with oxygen
      C1
      More
    • oxygen

      US /ˈɑksÉȘdʒən/

      UK /'ɒksÉȘdʒən/

      • Uncountable Noun
      • A gas in the air that we need to breathe
      • Oxygen administered as a medical treatment.
      B1
      More
    • ph

      US /ˈpiˈetʃ/

      UK /ˈpi:ˈeÉȘtʃ/

      • Noun
      • Acidity or alkalinity value of a solution
      B2
      More
    • pick it up

      US

      UK

      • Phrasal Verb
      • To lift something from a surface.
      • To collect something or someone.
      A2
      More
    • polar

      US /ˈpolɚ/

      UK /ˈpəʊlə(r)/

      • Adjective
      • Concerning the areas near the North or South poles
      B1
      More
    • positive

      US /ˈpɑzÉȘtÉȘv/

      UK /ˈpɒzətÉȘv/

      • Adjective
      • Showing agreement or support for something
      • Being sure about something; knowing the truth
      • Noun
      • A photograph in which light areas are light and dark areas are dark
      A2
      More
    • proton

      US /ˈproʊtɑ:n/

      UK /ˈprəʊtɒn/

      • Countable Noun
      • Tiny part of atom with positive electrical charge
      B2
      More
    • pull apart

      US

      UK

      • Phrasal Verb
      • To separate something into pieces, often forcefully.
      • To severely criticize something.
      A2
      More
    • put together

      US /pʊt təˈɡɛðɚ/

      UK /put təˈɡeðə/

      • Phrasal Verb
      • To build or assemble something small, e.g. a toy
      • To organize or arrange something.
      A1
      More
    • quantum

      US /ˈkwɑ:ntəm/

      UK /ˈkwɒntəm/

      • Noun (Countable/Uncountable)
      • The smallest unit or amount of energy
      B2
      More
    • react

      US /riˈÊkt/

      UK /rÉȘ'ĂŠkt/

      • Intransitive Verb
      • To change when mixing with other chemicals
      • To behave or make a change in a particular way
      A2
      More
    • reaction

      US /riˈÊkʃən/

      UK /rÉȘ'ĂŠkʃn/

      • Noun
      • Bodily response to a drug or something eaten
      • Feeling or action in response to something
      A2
      More
    • release

      US /rÉȘ'li:s/

      UK /rÉȘ'li:s/

      • Transitive Verb
      • To free someone from a responsibility or burden
      • To allow a film, music etc. to be sold/distributed
      • Noun
      • Act of freeing someone from a duty or burden
      • Introduction of a new product, film, book, etc.
      A2TOEIC
      More
    • roll down

      US /rol daʊn/

      UK /rəul daun/

      • Phrasal Verb
      • To move downwards by turning over and over.
      • To lower a car window.
      A1
      More
    • rule of thumb

      US /rul ʌv Ξʌm/

      UK /ru:l ɔv Ξʌm/

      • Noun (Countable/Uncountable)
      • A practical and approximate way of doing or measuring something.
      • A broadly accurate guide or principle, based on practice rather than theory.
      A1
      More
    • see in

      US /si ÉȘn/

      UK /si: in/

      • Phrasal Verb
      • To accompany someone to the entrance of a building or room.
      A1
      More
    • shell

      US /ʃɛl/

      UK /ʃel/

      • Noun (Countable/Uncountable)
      • Hard outer cover of an egg, fruit, nut, or seed
      • Hard metal container containing a bullet
      • Transitive Verb
      • To remove the outer covering of peas, nuts etc.
      • To fire shells (weapons) at
      B1
      More
    • sodium

      US /ˈsodiəm/

      UK /'səʊdÉȘəm/

      • Uncountable Noun
      • A soft, white chemical element
      B2
      More
    • solid

      US /ˈsɑlÉȘd/

      UK /'sɒlÉȘd/

      • Adjective
      • Being able to be trusted; reliable
      • Substance that is hard or of fixed shape
      • Noun
      • Something firm or hard; not gas or liquid
      A2
      More
    • spontaneous

      US /spɑnˈteniəs/

      UK /spɒnˈteÉȘniəs/

      • Adjective
      • Happening on its own, without anyone helping it
      B1
      More
    • spontaneously

      US /spɔnˈtenÉȘəslÉȘ/

      UK /spɒn'teÉȘnÉȘəslÉȘ/

      • Adverb
      • In a sudden, unplanned way
      B1
      More
    • such as

      US /sʌtʃ ĂŠz/

      UK /sʌtʃ ĂŠz/

      • Preposition
      • For example; like
      A1
      More
    • symbol of

      US

      UK

      • Phrase
      • Something that represents or stands for something else, especially an object representing an abstract idea.
      • A visible sign of something intangible.
      B2
      More
    • thanks to

      US /ξéƋks tu/

      UK /ξéƋks tu:/

      • Preposition
      • Because of; as a result of.
      A1
      More
    • think back

      US /ΞÉȘƋk bĂŠk/

      UK /ξiƋk bék/

      • Phrasal Verb
      • To recapture the past
      A1
      More
    • think of

      US /ΞÉȘƋk ʌv/

      UK /ξiƋk ɔv/

      • Phrasal Verb
      • To look on as (being something specific); consider
      • To consider or remember something.
      • Verb (Transitive/Intransitive)
      • To imagine or call something to mind
      A1
      More
    • throw away

      US

      UK

      • Phrasal Verb
      • To fail to take advantage of a good chance
      • To put things in the trash
      A1
      More
    • thumbs up

      US

      UK

      • Noun
      • A gesture of approval or agreement, indicated by holding a fist with the thumb extended upwards.
      • A positive rating or vote on social media or online platforms.
      • Noun (plural)
      • Multiple gestures of approval or agreement made by extending the thumbs upward.
      A1
      More
    • tug

      US /tÊŒÉĄ/

      UK /tʌg/

      • Transitive Verb
      • To pull (something) hard or suddenly
      • Noun
      • Pull at something that is hard or sudden
      B1
      More
    • turn into

      US /tɚn ˈÉȘntu/

      UK /tə:n ˈÉȘntuː/

      • Phrasal Verb
      • To change to become something else
      • To change your direction to go into a place
      A1
      More
    • used up

      US

      UK

      • Phrasal Verb
      • To use all of; consume
      • Adjective
      • Exhausted or depleted.
      A1
      More
    • valence

      US /'veÉȘləns/

      UK /'veÉȘləns/

      • Noun
      • Relative capacity that interact with antigens
      C2
      More
    • write down

      US /raÉȘt daʊn/

      UK /rait daun/

      • Phrasal Verb
      • To record in writing
      A1
      More
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    01:03

    She took a brave step forward, leaving behind her comfort zone to chase her dreams.

    Vocabulary
    • brave

      adj. Having courage

    • comfort zone

      phr. A familiar situation where one feels safe

    Explanation
    a brave step is a noun phrase, where brave is an adjective modifying the noun step, meaning "a courageous step". forward is an adverb modifying step, meaning "ahead". The whole phrase serves as the object, answering the "what" of took (verb) — she took a brave step forward.

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    brave

    US/brev/
    UK/breÉȘv/
    adj.Brave
    v.t.To bravely face
    A2 Elementary

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    B2US
    #electron#hydrogen#valence#energy#sodium#water

    GENERAL CHEMISTRY explained in 19 Minutes

    0
    Jr RodrĂ­guez posted on 2026/01/23
    Ever wondered what makes up everything around you? This super-fast explainer breaks down atomic structure, the periodic table, and chemical bonding in just 19 minutes, perfect for boosting your high school chemistry knowledge and picking up some advanced vocabulary along the way!

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