Chemistry

Breanna Farrell

28 September, 02:23

Sort the following situations into chemical change or physical change:

1. salt dissolves in water

2. Hydrochloric acid reacts with magnesium to produce hydrogen gas

3. a piece of copper is cut in half

4. a sugar cube is ground up

5. water is heated and changed to steam

6. iron rusts

7. ethyl alcohol evaporates

8. ice melts

9. milk sours

10. sugar dissolves in water

11. sodium and potassium react violently with water

12. pancakes cook on a griddle

13. grass grows on a lawn

14. a tire is inflated with air

15. food is digested in the stomach

16. water is absorbed by a paper towel

17. ethyl alcohol boils at 79 egress Celsius

18. paper burns

19. water freezes at 0 degrees Celsius

20. fireworks explode

21. alka-seltzer gives off carbon dioxide when added to water

22. clouds form in the sky