Question

a scientist tests how the temperature of water affects how quickly sugar dissolves. 20. identify the independent variable. 21. identify the dependent variable. 22. why is it important to keep the type and amount of sugar the same in each trial?

Explanation:

Step1: Define independent variable

The variable that is changed is water - temperature.

Step2: Define dependent variable

The variable that is measured is sugar - dissolution rate.

Step3: Explain constant importance

To isolate the effect of water - temperature.

Answer:

1. Temperature of water
2. Rate of sugar dissolution
3. To isolate the effect of water temperature on sugar dissolution.