Question

A student wants to investigate if a chemical reaction happened when she mixed two liquids.

Which of these should be part of her investigation?

Answer 1

To investigate if a chemical reaction occurred when mixing two liquids, the student should determine the mass of the reactants, observe any changes when the solutions are mixed, and write down a balanced equation for the reaction.

Step-by-step explanation:

In order to investigate if a chemical reaction occurred when two liquids were mixed, the student should include the following steps in her investigation:

1. Determine the mass of each of the reactants.
2. Add solution 1 to solution 2 and observe any changes. Look for factors such as temperature changes, light given off, unexpected color changes, or the formation of bubbles.
3. Write down a balanced equation for the reaction that took place when the two solutions were mixed.

These steps will help the student identify whether a chemical reaction occurred based on observable evidence.