Question

Write ten changes that and they can't be reserve

Answer 1

sting of iron

combustion (burning) of wood

metabolism of food in the body

mixing an acid and a base, such as hydrochloric acid (HCl) and Sodium hydroxide (NaOH)

cooking an egg

digesting sugar with the amylase in saliva

mixing baking soda and vinegar to produce carbon dioxide gas

baking a cake

electroplating a metal

using a chemical battery

Answer 2

1. Burning wood.
2. Souring milk.
3. Mixing acid and base.
4. Digesting food.
5. Cooking an egg.
6. Heating sugar to form caramel.
7. Baking a cake.
8. Rusting of iron
9. Dissolved sugar
10. cooked vegetables