► Investigation Two Summary – Lab Goals

In Investigation Two, you analyzed how changing the amounts of the reactants in a chemical reaction affects the amount of the products that are produced. During this Investigation, you:

1. Tested the reaction of 2 ml of hydrochloric acid (HCl) with 0.5 g of magnesium.

2. Tested the reaction of 15ml of hydrochloric acid (HCl) with 0.5g of magnesium.

3. Tested the reaction of 50ml of hydrochloric acid (HCl) with 0.5g of magnesium.

4. Tested the reaction of 75ml of hydrochloric acid (HCl) with 0.5g of magnesium.

5. Tested the reaction of 100ml of hydrochloric acid (HCl) with 0.5g of magnesium.

6. Tested the reaction of 100ml of hydrochloric acid (HCl) with 1 g of magnesium.

7. Calculated the volume of a sphere using the following formula:

Volume of a sphere = 0.52 • d3 = 0.52 • (d • d • d)

► Investigation One Summary – Learning Goals

Through these experiments, students will conclude that:

1. Reactants must be present in the reaction in equivalent amounts to produce the maximum amount of all reactants.

2. No matter is lost from a chemical reaction even if the reactants are present in amounts that are not equivalent. Every atom of every reactant can be found in either the products or in reactants that are not consumed.