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Which is a characteristic of a physical change? a The chemical bonds in the substance are unchanged. b The change cannot be seen. c The molecules all move at the same speed. d The substance has reacted
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Which is a characteristic of a physical change?

a
The chemical bonds in the substance are unchanged.

b
The change cannot be seen.

c
The molecules all move at the same speed.

d
The substance has reacted with another substance.

User Cementblocks
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The answer for your question is a
User Kimberleigh
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