18. Which of the following is an example of a physical change?
A. a silver spoon tarnishing
C. a popsicle melting
B. a cake baking in an oven
D. a car rusting
A. a silver spoon tarnishing
C. a popsicle melting
B. a cake baking in an oven
D. a car rusting
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Answer:
C. a popsicle melting
Why? a rusting car corrodes and changes its chemical composition due to oxidation. A silver spoon tarnishes and changes its chemical composition as it tarnishes. A cake baking in an oven changes its chemical composition as it is being affected by heat. popsicle is basically the same substance, it just changes its state into a liquid.
Answer:
18. is D
Explanation:
that is my answer..
I hope it helps:)