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(a) What is a physical change?

A) a change of state

B) a change that can be measured without reference to other substances

C) a change in reactivity

D) a change of atomic structure

(b) What is a chemical change?

A) a change that can be measured without reference to other substances

B) a change of state

C) results in a substance different from the original

D) a change in reactivity

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Keith LeannonLv2

2 Feb 2019

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