AnswersReed Fall 2026 Physical Science 2nd Semester 7th HourChanges of StateQuestion 16
16
QuizMultiple Choice

Changes of State

Question 16 • Reed Fall 2026 Physical Science 2nd Semester (7th Hour)

Density involves the amount of a material in a certain volume. When a material changes phases, it changes in density in a predictable way as the amount of material stays the same but the molecules get farther apart or closer together. Water has solid and liquid states that do not follow these predictions of density in the phases of matter.

Answer
A
The solid state is the most dense, followed by the liquid state, then the gas state.
B
The solid state is more dense than the liquid state.
C
The liquid state is more dense than the solid state.
D
The gas state is the most dense, followed by the liquid state, then the solid state.

Explanation

Water is unusual because its solid form, ice, is less dense than its liquid form. When water freezes, its molecules arrange into a structure that takes up more space for the same amount of material. Therefore, the liquid state is more dense than the solid state, which is choice C.

AI-written and checked against the verified answer.

Previous
Next

More from this Course

Quiz
10 verified answers

States of Matter

Quiz
10 verified answers

Changes of State

Quiz
3 verified answers

States of Matter