CHEMICAL CHANGES
1. rusting of iron
2. combustion (burning) of wood
3. metabolism of food in the body
4. mixing an acid and a base, such as hydrochloric acid (HCl) and sodium hydroxide (NaOH)
5.cooking an egg
6.digesting sugar with the amylase in saliva
7. mixing baking soda and vinegar to produce carbon dioxide gas
8.baking a cake
9. electroplating a metal
10. using a chemical battery
11. explosion of fireworks
12. rotting bananas
13. grilling a hamburger
14. milk going sour
PHYSICAL CHANGES
1. crushing a can
2. melting an ice cube
3. boiling water
4. mixing sand and water
5. breaking a glass
6. dissolving sugar and water
7. shredding paper
8. chopping wood
9. mixing red and green marbles
10. sublimating dry ice
11. crumpling a paper bag
12. chopping an apple
13. mixing salt and sand
