Vocabulary

• have to: Must do
• look at: To use your eyes to focus on something
• going on: To continue doing something
• tip off: Inform somebody about something that is secret or private.
• go ahead: To start an activity; start doing, working etc.
• come from: To have as your native country or city
• in general: Typically; usually; on the whole.
• of course: Sure ; Certainly
• in a sense: In one way of thinking; to some extent; in some ways.
• all at once: Suddenly; at the same time
• at once: Immediately; without delay
• kick off: To start a football match.
• play in: To participate or compete in a game or competition.
• step to: To approach someone or something, often with a specific purpose.
• know about: To have information or understanding of a subject or situation.
• stuff: Generic description for things, materials, objects
• sort: To organize things by putting them into groups
• approach: To get close to reaching something or somewhere
• recognize: To accept the truth or reality of something
• content: Being happy or satisfied
• situation: Place, position or area that something is in
• slightly: Only a little
• matter: To be of great importance; to count
• negative: The opposite to a positive electrical charge
• associate: Partner in professional work, e.g. in law
• general: Widespread, normal or usual
• sense: Certain mental feeling or emotion
• molecule: Two or more atoms chemically combined
• bit: Device put in a horse's mouth to control it
• bond: Rope, chain or other thing used to tie someone up
• substitute: To perform the tasks instead of someone else
• mechanism: Part of a machine that performs a certain function
• occur: To come to pass or to happen
• draw: To attract attention to someone or something
• tip: To pour or move something from a place, container
• state: Region within a country, with its own government
• explain: To make clear or easy to understand by describing
• form: Sports team or person's current winning record
• charge: To run quickly toward someone to attack them
• generate: To create or be produced or bring into existence
• reaction: Bodily response to a drug or something eaten
• responsible: Being the cause of something that has occurred
• pretty: Being attractive to the eye in a simple way
• reason: To think and make conclusions in a logical manner
• transition: Change from one state, movement, place to another
• rest: Time when one relaxes, sleeps, or is inactive
• oxygen: A gas in the air that we need to breathe
• element: Essential or particular part of something
• produce: Fresh foods such as fruits and vegetables
• formal: Observing rules and procedures strictly
• gain: To increase in something, such as weight
• react: To change when mixing with other chemicals
• carbon: Chemical element with an atomic number of 6
• confusion: Not knowing what to do; state of disorder
• learn: To get knowledge or skills by study or experience
• hydrogen: Lightest of all chemical elements
• mixture: Something made by combining two or more things
• migrate: To move from one country or place to live or work
• rotate: To regularly change people who perform a role
• anti: A prefix meaning 'against' or 'opposed'
• neutralize: To remove or take away a threat
• wedge: Golf club designed to hit the ball high in the air
• disconnect: To separate something from something else
• partial: Giving better treatment to one person than another
• hydration: Process of supplying or adding water to
• solvent: Substance used to dissolve or melt others
• polarize: To divide opinions into two extremes
• oxidation: Process of combining with oxygen
• electron: A negatively charged particle
• stereo: Device transmitting sound through two speakers
• substrate: A substance which a catalyst has an effect on
• pi: The ratio of the circumference to the diameter