Chemistry

Question Analysis
This question evaluates the student's ability to identify examples of different states of matter, specifically focusing on the characteristics of a gas.

Key Concept Explanation
A gas has highly dispersed, randomly moving particles with no fixed shape or volume. Examples include air, helium, and other gases.

Step-by-step Solution
1. Identify the key concept: Characteristics of a gas.
2. Recall that a gas has no fixed shape or volume and its particles are highly dispersed and random.
3. Evaluate each option:
Option A: Ice cube (solid)
Option B: Water in a beaker (liquid)
Option C: ...