HM Chap 1 Flashcards

1
Q

Chemistry is

A

the study of the composition, structure, properties, and reactions of matter.

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2
Q

A chemical is

A

a substance that has the same composition and properties wherever it is found.

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3
Q

A hypothesis proposes a possible explanation for a _______ phenomenon. A hypothesis must be stated in a way that it can be tested by experiments.

a. artificial
b. natural

A

natural

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4
Q

An experiment is

A

a procedure that tests the validity of a hypothesis.

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5
Q

A theory is

A

a hypothesis that has been validated many times by many scientists.

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6
Q

An observation is

A

a description or measurement of a natural phenomenon.

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