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What is one sign that indicates a physical change? a) matter changes, but no new substance is formed b) a substance changes color when exposed to air. c) something catches fire …

What is one sign that indicates a physical change? a) matter changes, but no new substance is formed b) a substance changes color when exposed to air. c) something catches fire …
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What is one sign that indicates a physical change?

a) matter changes, but no new substance is formed
b) a substance changes color when exposed to air.
c) something catches fire and turns back
d) temperature drops as two liquids are mixed together

asked
User Joseph Willcoxson
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1 Answer

3 votes
something catches fire and turns back
answered
User Jimmie Tyrrell
by
8.3k points
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