An ice cube is in the solid state of matter. When water freezes, its molecules slow down and form a rigid, crystalline structure. This process occurs at 0°C (32°F) under standard atmospheric pressure.
In the solid state, the molecules are closely packed together, which gives the ice cube a definite shape and volume. Unlike liquids and gases, solids do not flow and are not easily compressed.
Understanding the state of matter of an ice cube helps in various scientific and everyday contexts, such as cooking, weather patterns, and even in the study of planetary bodies.