Chemical changes since experemint.

                                                      
                                             Chemical Changes.
What you need.

Washing powder.
3 small plastic cups.
One big plastic cup.
Baking soda.
Black paper.
Vinegar.
A teaspoon.

Steps.
1: Get your black paper.
2: Put your cups on the paper.
3: Poor one teaspoon of the vinger in the big cup.
4: Put one teaspoon of baking soda in each of the small cups.
5: Put one teaspoon of washing powder in the small cups.
6: Poor the Vinegar from the big cup into the small cups
Watch the reaction!