Sample

Question

Observation
1
The drop of food coloring spreads slowly.
2
The drop of food coloring spreads very quickly.
Course
Tools
Physical Science, Grade 8 A
Mark as Complete
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?
(1 point)
• The water molecules of sample 1
are moving faster.
• The temperature of sample 2 is close to freezing.
The water molecules of sample 1
• are transferring more

Answer 1

The best explanation for the observations in the table is:

• The water molecules of sample 1 are moving faster.

This is because the rate at which food coloring spreads in water is generally influenced by the temperature of the water. Warmer water has faster-moving molecules, which would cause the food coloring to spread quickly. In contrast, if the food coloring spreads slowly, it suggests that the water molecules are moving more slowly. Therefore, it can be inferred that the temperature of sample 1 is higher than that of sample 2, leading to faster diffusion in sample 1.