Identify the following as physical (P) or chemical (C) changes.
1. NaCl (Table Salt) dissolves in water.
2. Ag (Silver) tarnishes.
3. An apple is cut.
4. Heat changes H2O to steam.
5. Baking soda reacts to vinegar.
6. Fe (Iron) rusts.
7. Alcohol evaporates.
8. Ice melts.
9. Milk sours.
10. Sugar dissolves in water.
11. Wood rots.
12. Pancakes cook.
13. Grass grows.
14. A tire is inflated.
15. Food is digested.
16. Paper towel absorbs water.
Answers
Answered by
7
Answer:
Physical changes only change the appearance of a substance, not its chemical composition. Chemical changes cause a substance to change into an entirely substance with a new chemical formula. Chemical changes are also known as chemical reactions.
Answered by
6
Hi
Here’s your answer
1) p
2) c
3) p
4) p
5) c
6) c
7) not sure
8) p
9) c
10) p
11) c
12) c
13) c
14) p
15) c
16) p
Here’s your answer
1) p
2) c
3) p
4) p
5) c
6) c
7) not sure
8) p
9) c
10) p
11) c
12) c
13) c
14) p
15) c
16) p
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