accurate
US /ˈækjərɪt/
UK /ˈækjərət/
- Adjective
- With no mistake or error; Correct
A2Morealso known as
US
UK
- Phrase
- Also called; alternatively named.
- Identified by another term; synonymous with.
A1Moreammonia
US /əˈmonjə/
UK /ə'məʊnɪə/
- Uncountable Noun
- Colorless liquid or gas used in cleaning products
B2Moreammonium
US /əˈmoʊniəm/
UK /əˈməʊniəm/
- Uncountable Noun
- A chemical derived from ammonia
- A salt or compound containing the NH4+ ion, often used in fertilizers.
B2Moreappearance
US /əˈpɪrəns/
UK /əˈpɪərəns/
- Noun
- The way a person looks to others
- The way that something looks
A2TOEICMorebleach
US /blitʃ/
UK /bli:tʃ/
- Uncountable Noun
- Chemical that disinfects and whitens
- Transitive Verb
- To use a chemical that disinfects and whitens
- To make (e.g. hair) lighter in color; lighten
B2Morebubble
US /ˈbʌbəl/
UK /ˈbʌbl/
- Countable Noun
- A small ball of air inside of a liquid
- Intransitive Verb
- (Of a liquid) to produce bubbles, as when boiling
- To show intense emotion, e.g. excitement, anger
B1TOEICMorecalcium
US /ˈkælsiəm/
UK /'kælsɪəm/
- Uncountable Noun
- A substance important for making bones and teeth
- A substance containing calcium, taken to improve health.
C2Morecarbon
US /ˈkɑrbən/
UK /'kɑ:bən/
- Uncountable Noun
- Chemical element with an atomic number of 6
B1Morecarbonate
US /ˈkɑ:rbənət/
UK /ˈkɑ:bəneɪt/
- Transitive Verb
- To charge a drink with carbon dioxide
- Noun
- A chemical including carbon dioxide
C2Morechlorine
US /ˈklɔːrˌiːn/
UK /ˈklɔ:ri:n/
- Uncountable Noun
- Greenish-yellow gas with a strong smell
B2Morecombustion
US /kəmˈbʌstʃən/
UK /kəmˈbʌstʃən/
- Uncountable Noun
- An act or instance of burning
B2TOEICMorecompared with
US /kəmˈpɛrd wɪð/
UK /kəmˈpeəd wið/
- Preposition
- In relation to
- Verb (Transitive/Intransitive)
- To have examined the differences or similarities between two or more things.
A1Moreconcentration
US /ˌkɑ:nsnˈtreɪʃn/
UK /ˌkɒnsnˈtreɪʃn/
- Noun (Countable/Uncountable)
- Amount or number of something in a thing or place
- Paying (a lot of) attention to a task
A2Moreconclusion
US /kənˈkluʒən/
UK /kənˈklu:ʒn/
- Noun
- End of something; finish
- Judgment or opinion after thinking for a while
A2Moreconfirm
US /kənˈfɜ:rm/
UK /kənˈfɜ:m/
- Transitive Verb
- To formally approve or check something
- To provide evidence to establish the truth of
A2Moredetermine
US /dɪˈtɚmɪn/
UK /dɪ'tɜ:mɪn/
- Transitive Verb
- To control exactly how something will be or act
- To establish the facts about; discover
A2TOEICMoredioxide
US /daɪˈɑksaɪd/
UK /daɪˈɒksaɪd/
- Noun
- An oxide containing two oxides per molecule
B2Moredistinctive
US /dɪˈstɪŋktɪv/
UK /dɪˈstɪŋktɪv/
- Adjective
- Having a quality that is different from others
- Having a quality or characteristic that makes a person or thing different from others; easily distinguishable.
A2TOEICMoredue to
US /du tu/
UK /dju: tu:/
- Preposition
- Because of; owing to
- Adjective
- Attributable to; caused by.
A1Moreeventually
US /ɪˈvɛntʃuəli/
UK /ɪˈventʃuəli/
- Adverb
- After a long time; after many attempts; in the end
- At some later time; in the future
A2Moreexplosion
US /ɪkˈsploʒən/
UK /ɪkˈspləʊʒn/
- Noun (Countable/Uncountable)
- Loud and sudden expression of emotion
- Sudden increase of something
B1Moreflammable
US
UK
- Adjective
- Burning quickly and easily
C1Moreformation
US /fɔ:rˈmeɪʃn/
UK /fɔ:ˈmeɪʃn/
- Noun
- Process of creating; making a particular shape
B1Moreglow
US /ɡlo/
UK /ɡləʊ/
- Noun
- Pink color in the face, e.g. from exercise/emotion
- Pleasant feeling, as of happiness or satisfaction
- Intransitive Verb
- To look very healthy and contented
- To emit a steady even light
B1Morehint
US /hɪnt/
UK /hɪnt/
- Verb (Transitive/Intransitive)
- To suggest without being direct about it
- Noun (Countable/Uncountable)
- Helpful piece of information
- Tiny quantity or sign of something
A2Morehydrogen
US /ˈhaɪdrədʒən/
UK /ˈhaɪdrədʒən/
- Uncountable Noun
- Lightest of all chemical elements
B1Moreidentity
US /aɪˈdɛntɪti/
UK /aɪ'dentətɪ/
- Noun (Countable/Uncountable)
- Collection of qualities that makes a person
- Who someone is; the name of a person
B1Morein conclusion
US
UK
- Phrase
- Used to indicate a summary or final point.
A1Morein mind
US /ɪn maɪnd/
UK /in maind/
- Phrase
- Being aware of or considering something.
- To remember or consider something.
A2Morein the presence of
US /ɪn ðə ˈprɛzəns ʌv/
UK /in ðə ˈprezəns ɔv/
- Preposition
- While someone or something else is present.
B1Morelaboratory
US /ˈlæbrəˌtɔri, -ˌtori/
UK /lə'bɒrətrɪ/
- Noun (Countable/Uncountable)
- A place to do scientific experiments
- A place where tests are done for medical diagnosis.
B1Morelime
US /laɪm/
UK /laɪm/
- Noun (Countable/Uncountable)
- White containing calcium used in farming
- Small, round and sour fruit with hard green skin
- Adjective
- Bright green color
B2Moremini
US /ˈmɪni/
UK /'mɪnɪ/
- Noun
- Small British car
- A very short skirt
- Prefix
- Small
B1Moreoccur
US /əˈkɚ/
UK /əˈkɜ:(r)/
- Intransitive Verb
- To come to pass or to happen
- To be found to exist; to be present.
A2TOEICMoreoxygen
US /ˈɑksɪdʒən/
UK /'ɒksɪdʒən/
- Uncountable Noun
- A gas in the air that we need to breathe
- Oxygen administered as a medical treatment.
B1Morepause
US /pɔz/
UK /pɔ:z/
- Verb (Transitive/Intransitive)
- To stop doing for a while before continuing
- To temporarily interrupt the execution of a program or process.
- Noun (Countable/Uncountable)
- A temporary break before continuing
- Function on a device to stop and restart it
A2Morepop
US /pɑp/
UK /pɒp/
- Verb (Transitive/Intransitive)
- To cause something to open or burst suddenly
- To go to or in a place for a brief period of time
- Noun (Countable/Uncountable)
- Sweet soda drink
- A short, sharp, explosive sound.
B2Morepresence
US /ˈprɛzəns/
UK /ˈprezns/
- Noun
- The same place or area that a person is
- Ability to reach a market, group of people etc.
A2Morereaction
US /riˈækʃən/
UK /rɪ'ækʃn/
- Noun
- Bodily response to a drug or something eaten
- Feeling or action in response to something
A2Moresmoke
US /smoʊk/
UK /sməʊk/
- Intransitive Verb
- To give off a cloud of grey gas from burning
- Uncountable Noun
- Grey gas from fires and cigarettes
- Fog of air coming from e.g. a cigarette, fire
B1Moresolution
US /səˈluʃən/
UK /səˈlu:ʃn/
- Noun (Countable/Uncountable)
- Mix of a liquid and a solid or a gas
- Way to solve or deal with a problem
A2Moresplit
US /splɪt/
UK /splɪt/
- Adjective
- No longer married or in a relationship
- (Injured) by cutting it open, as in someone's lip
- Verb (Transitive/Intransitive)
- To become divided or broken along a straight line
- To cause a cut in (lip, etc.)
A2Moresqueaky
US /ˈskwiki/
UK /ˈskwi:ki/
- Adjective
- Making a high-pitched sound, like a mouse
C1Morethink about
US /θɪŋk əˈbaʊt/
UK /θiŋk əˈbaut/
- Phrasal Verb
- To consider something carefully.
- To remember or call to mind.
A1Morevessel
US /ˈvɛsəl/
UK /ˈvesl/
- Countable Noun
- Container, such as a cup, for holding liquids
- A ship or boat; something that carries things
B1TOEICMore
Vocabulary
- in the presence of: While someone or something else is present.
- due to: Because of; owing to
- in mind: Being aware of or considering something.
- think about: To consider something carefully.
- compared with: In relation to
- also known as: Also called; alternatively named.
- in conclusion: Used to indicate a summary or final point.
- eventually: After a long time; after many attempts; in the end
- determine: To control exactly how something will be or act
- split: No longer married or in a relationship
- accurate: With no mistake or error; Correct
- presence: The same place or area that a person is
- vessel: Container, such as a cup, for holding liquids
- conclusion: End of something; finish
- concentration: Amount or number of something in a thing or place
- appearance: The way a person looks to others
- distinctive: Having a quality that is different from others
- occur: To come to pass or to happen
- reaction: Bodily response to a drug or something eaten
- pause: To stop doing for a while before continuing
- form: Sports team or person's current winning record
- identity: Collection of qualities that makes a person
- compare: To consider how similar and different things are
- create: To make, cause, or bring into existence
- due: When something is required or expected
- solution: Mix of a liquid and a solid or a gas
- mind: To be bothered or upset by something
- oxygen: A gas in the air that we need to breathe
- pop: To cause something to open or burst suddenly
- hint: To suggest without being direct about it
- glow: Pink color in the face, e.g. from exercise/emotion
- place: To put someone in a particular type of situation
- carbon: Chemical element with an atomic number of 6
- confirm: To formally approve or check something
- dioxide: An oxide containing two oxides per molecule
- formation: Process of creating; making a particular shape
- calcium: A substance important for making bones and teeth
- learn: To get knowledge or skills by study or experience
- sound: Sensible, dependable and reliable
- continue: To do something without stopping, or after pausing
- lit: To cause something to burn; put a burning match to
- explosion: Loud and sudden expression of emotion
- product: Item that can be bought
- laboratory: A place to do scientific experiments
- bubble: A small ball of air inside of a liquid
- bleach: Chemical that disinfects and whitens
- burn: To destroy with fire
- hydrogen: Lightest of all chemical elements
- lesson: Something done to learn or teach something; class
- hear: To be aware of sound; to perceive with the ear
- combustion: An act or instance of burning
- chlorine: Greenish-yellow gas with a strong smell
- flammable: Burning quickly and easily
- mouth: Hole in the face used for eating and talking
- carbonate: To charge a drink with carbon dioxide
- squeaky: Making a high-pitched sound, like a mouse
- lime: White containing calcium used in farming
- ammonia: Colorless liquid or gas used in cleaning products
- smoke: To give off a cloud of grey gas from burning
- ammonium: A chemical derived from ammonia
- mini: Small British car
Get the full experience in the app
Learn anywhere with detailed sentence and usage analysis
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.
Get the full experience in the app
Look up words anytime with pronunciation, part of speech, and usage
brave
US/brev/
UK/breɪv/
adj.Brave
v.t.To bravely face
A2 Elementary
Get the full experience in the app
Practice speaking anytime and get instant pronunciation feedback
Try this speaking exercise.
Try practicing with this sentence.
80
Testing for Hydrogen, Oxygen, Carbon Dioxide, Ammonia and Chlorine | The Chemistry Journey
0
Yrchinese posted on 2017/02/04Ever wondered how scientists identify different gases in the lab? This video breaks down the cool 'squeaky pop' test for hydrogen and the limewater test for carbon dioxide, packed with essential chemistry vocabulary! You'll pick up advanced terms and practice simple sentence structures while watching these awesome lab demonstrations.
Learn this video on the APP!
The VoiceTube App has more in-depth practice for videos!