State of Matter | MCQs

Explanation

A burning candle is an example of all three states of matter:

• Solid: The wax is in a solid state.
• Liquid: The melted wax is in a liquid state.
• Gas: The vaporized wax and combustion products are in a gaseous state.

Explanation

• Liquids have a fixed volume, but their shape changes depending on the container they are in.
• As their particles are close together but free to move past each other.

Explanation

• Solids have a fixed shape and a fixed volume.
• It meaning their particles are closely packed and have a regular arrangement.

Explanation

Matter changes state from:

• Solid to liquid (melting) when it gains energy
• Liquid to gas (vaporization) when it gains energy

This is because the particles need more energy to break free from their rigid structure in solids and move more freely in liquids, and even more energy to escape into the air as gases.

Explanation

In a solid, the particles are arranged in a regular and closely packed manner, with a fixed position and shape.

Explanation

Heat energy is responsible for changing the state of matter.

Such as:

• Melting (solid to liquid).
• Freezing (liquid to solid).
• Evaporation (liquid to gas).
• Condensation (gas to liquid).