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.
A. The food coloring moves faster in hot water.
B. The food coloring moves slower in hot water.
D. The food coloring is less dense than the cold water.
These options explain the observation that the food coloring spreads faster in the hot water than in the cold water. This is because the molecules in hot water move faster and have more energy, which allows for quicker diffusion of the food coloring. Additionally, the food coloring is less dense than the cold water, so it tends to rise and spread more easily in the hot water.
C. The food coloring is denser than the cold water.
This option does not explain the observation correctly. The food coloring is actually less dense than the cold water, so it tends to rise and spread more easily in both the hot and cold water.
E. The food coloring separates into two different colors.
This option is not applicable to the given information. The picture does not show any indication of the food coloring separating into two different colors.
F. The food coloring increases the temperature of the water.
This option is not applicable to the given information. The food coloring does not have the ability to increase the temperature of the water.