In the Lab (H3)
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Key vocabulary words with IPA pronunciation, definitions, example sentences, and interactive quizzes.
Phrases with type tags, bilingual definitions, usage notes, and example sentences.
To become interesting, exciting, or full of energy
To move backward away from something, especially out of surprise or to avoid danger
Progressing gradually from one stage to the next in a sequence
A visible alteration in color, often indicating a chemical reaction has occurred