HYG Experiment and Controlling Substances

True or false? When a chemical reaction takes place, matter is neither created nor destroyed.

True or false? In the HYG experiment, the reactants (the substances used for the experiment) will have a different mass than the products (the substances made in the chemical reaction).

True or false? The color change to yellow in our experiment was the result of the mixture of all the reactants--water, phenol red, baking soda, and calcium chloride.

What reactant would you need to remove from the list of substances used in the experiment if you did not want to have a color change to yellow?

True or false? The production of gas (bubbles) in our experiment required phenol red, water, and baking soda.

True or false? To produce gas (bubbles), all that is required is baking soda and calcium chloride.

True or false? To produce gas (bubbles), you need baking soda, calcium chloride, and water.

The addition of _____ to either liquid resulted in a temperature change (heat).

The only way to know which substance causes a particular reaction in an experiment is to (a)   the substances in the experiment.

To control substances means to test _____ substance(s) at a time.