The table is as follows: Sample 1: The drop of food coloring spreads slowly.

Question

Sample 2: The drop of food coloring spreads very quickly.
A student places a drop of food coloring into two water samples. Her observations are shown in the table. Which statement best explains the observations in the table? Choose one answer.
a. The temperature of sample 2 is higher
b. The water molecules of sample 1 are moving faster
c. The water molecules of sample 1 are transferring more kinetic energy
d. the temperature of sample 2 is close to freezing

a.

Answer 1

The correct answer is a. The temperature of sample 2 is higher.

This statement best explains why the drop of food coloring spreads quickly in sample 2 compared to sample 1. In general, higher temperatures increase the kinetic energy of water molecules, causing them to move more rapidly and allowing the food coloring to diffuse faster.