1. The problem involves identifying the states of matter represented by three cubes: one half-filled with liquid, one containing gas, and one fully solid. 2. States of matter are typically solid, liquid, and gas, each with distinct properties: - Solid: definite shape and volume. - Liquid: definite volume but takes the shape of its container. - Gas: neither definite shape nor volume, expands to fill container. 3. The left cube is half-filled with liquid, indicating the liquid state. 4. The middle cube contains a smaller cube labeled gas, representing the gaseous state. 5. The right cube is fully shaded, representing a solid state. Final answer: The cubes represent liquid, gas, and solid states respectively.