Vocabulary

• at once: Immediately; without delay
• all at once: Suddenly; at the same time
• going on: To continue doing something
• instead of: When one thing is replaced by another
• as with: In the same way that something happens or is true of something else.
• in mind: Being aware of or considering something.
• work out
• look at: To use your eyes to focus on something
• at the same time: Simultaneously; at the identical moment.
• same time: Occurring simultaneously or at the same point in time.
• in fact: Used to emphasize the truth of a statement, especially one that contrasts with or contradicts something else.
• stuff: Generic description for things, materials, objects
• subscribe: To regularly pay to receive a service
• basically: Used before you explain something simply, clearly
• realize: To become aware of or understand mentally
• specifically: As regards a particular thing; closely related to
• position: Person's opinion or attitude about something
• bit: Device put in a horse's mouth to control it
• bond: Rope, chain or other thing used to tie someone up
• mechanism: Part of a machine that performs a certain function
• mean: Average of a set of numbers
• state: Region within a country, with its own government
• explain: To make clear or easy to understand by describing
• refer: To talk about or write about something
• form: Sports team or person's current winning record
• extract: Essential ingredient of a natural thing
• reaction: Bodily response to a drug or something eaten
• transition: Change from one state, movement, place to another
• mind: To be bothered or upset by something
• leave: To go away from; depart
• receive: To get something someone has given or sent to you
• notice: To become aware by sight, touch, or hearing
• lot: What happens to a person in life from chance; fate
• carbon: Chemical element with an atomic number of 6
• channel: Long hole dug in the ground, e.g. to move water
• place: To put someone in a particular type of situation
• important: Having power or authority
• science: Study of the physical world, based on facts
• fact: Something that is known or proved to be true
• acid: Sour substance that reacts with metals e.g. lemon
• attach: To be associated or connected with
• replace: To use instead of something else
• hydrogen: Lightest of all chemical elements
• adjacent: Being close or near to a border, wall, or point
• professor: Teacher who teaches at a college or university
• arrow: Symbol used on road signs to show direction
• base: Place military personnel live, train, and operate
• materialize: To become real or actual
• substitution: Act of replacing one person or thing to do a job
• elimination: Act or process of removing or being removed
• weaken: To make something or someone less powerful
• proton: Tiny part of atom with positive electrical charge
• alpha: First letter in the Greek alphabet
• ion: Atoms with either a positive or negative charge
• substrate: A substance which a catalyst has an effect on
• beta: Test version of a product or software
• pi: The ratio of the circumference to the diameter