Grammar Quiz
[ Vocabulary ]

Any substance that cannot be decomposed into simpler substances by ordinary chemical processes

A. atom

B. element

C. compound

D. molecule

Select your answer:
         


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Comparative AdjectiveIdiom and TensesPast Simple TensesSubordinating and Coordinating ConjunctionsAuxiliary Verbs (be, do, have)Quantifiers MixModal Verbs of Certainty and PossibilityHow often - long - much - manyOn, At, By

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