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Phantasy [73]
3 years ago
12

Explain the most important difference between a physical and chemical change.

Chemistry
2 answers:
timama [110]3 years ago
7 0
You can see a physical change always but not always a chemical
Semmy [17]3 years ago
6 0

Answer:

answer below... hope this helps

Explanation:

When a substance undergoes a <u>physical change</u>, its composition remains the same despite its molecules being rearranged. When a substance undergoes a <u>chemical change</u>, its molecular composition is changed entirely. ... Some examples of physical change are freezing of water, melting of wax, boiling of water, etc.

Burning of paper and log of wood, Digestion of food, Boiling an egg, Chemical battery usage, Electroplating a metal, Baking a cake, Milk going sour is a chemical change

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The specific heat of copper is 0.093 cal/g0C. Calculate the temperature change that occurs if 28 g of copper at 25 0C absorbs 58
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Answer:

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Explanation:

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