This investigation is a controlled experiment, so you can change only one variable at a time. Decide whether you’ll change the amount of baking soda or the amount of vinegar. Give a reason for your choice.

Now decide how many different combinations of baking soda and vinegar you will try. The number of combinations must be three or more.

List the amounts of baking soda and vinegar that you will use in each combination. Remember, the amount of one of the two substances must be held constant.

Part D
Carry out the investigation you planned. Record your data in the table. In the observation column, record the amount of bubbles you see.