Pathways Unit 1 Lesson B Vocabulary

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substance

Back

(n) a certain kind of material

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attach

Back

(v) to join or connect to something

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produce

Back

(v) to make or create

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reaction

Back

(n) an action or change (often negative) in response to something

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defend

Back

(v) to protect

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avoid

Back

(v) to stay away from something

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contain

Back

(v) to have something inside

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common

Back

(adj) usual

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research

Back

(n) work that involves studying something

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theory

Back

(n) an idea used to explain something