A student places a drop of purple food coloring into one beaker of water at 20°C and another drop into another beaker of water at 50°C. The temperature of the food coloring is 19°C. The picture shows what he observes. What explains what the student observes in this investigation? Select all that apply. A. The food coloring moves faster in hot water. B. The food coloring moves slower in hot water. C. The food coloring is denser than the cold water. D. The food coloring is less dense than the cold water. E. The food coloring separates into two different colors. F. The food coloring increases the temperature of the water.

Question

A student places a drop of purple food coloring into one beaker of water at 20°C and another drop into another beaker of water at 50°C. The temperature of the food coloring is 19°C. The picture shows what he observes. What explains what the student observes in this investigation? Select all that apply. A. The food coloring moves faster in hot water. B. The food coloring moves slower in hot water. C. The food coloring is denser than the cold water. D. The food coloring is less dense than the cold water. E. The food coloring separates into two different colors. F. The food coloring increases the temperature of the water.

Answer 1

The correct explanations for what the student observes in this investigation are:

A. The food coloring moves faster in hot water.
C. The food coloring is denser than the cold water.

Explanation:
A. The food coloring moves faster in hot water because the molecules in hot water have more energy and are moving around faster, causing them to mix with the food coloring more quickly.

C. The food coloring is denser than the cold water because it sinks to the bottom of the beaker rather than spreading out evenly throughout the water.