Test: Matter and Materials - 2 - Class 4 MCQ

Solids have a fixed shape and occupy a defined volume. They do not flow and maintain their shape even when moved to a different location.

Liquids lack a fixed shape and can flow, but they occupy a defined volume. They assume the shape of their containers.

Gases can flow, lack a fixed shape, and assume the shape of their containers. They do not have a defined volume and can be compressed.

Gases possess all the mentioned properties: ability to flow, lack of a fixed shape, and assumption of the shape of their containers. Solids and liquids do not exhibit all these properties.

The primary factor that causes a change of state in matter is temperature. Increasing or decreasing the temperature can lead to a change from one state (solid, liquid, or gas) to another.

Deposition is the phase transition in which gas transforms into solid without passing through the liquid phase. Deposition is a thermodynamic process. The reverse of deposition is sublimation and hence sometimes deposition is called desublimation.

Dry ice is an example of sublimation. It changes directly from a solid state to a gaseous state without becoming a liquid.

Plasmas have the most energy and particles that move freely. Plasma is an ionized gas consisting of positively and negatively charged particles.

While energy is closely related to matter and interacts with it, it is not considered a property of matter itself. Matter possesses mass, occupies space (volume), and has density.

The water cycle plays a crucial role in maintaining the stability of Earth's water supply by ensuring a continuous circulation of water between the atmosphere and Earth's surface. It involves processes such as evaporation, condensation, precipitation, and runoff, allowing water to be distributed and available for various uses.