Heat Energy/States of Matter

Front

What is heat energy?

Back

Heat energy is a form of energy that is transferred between objects due to a temperature difference. It flows from warmer objects to cooler ones.

Front

What are the three states of matter?

Back

The three states of matter are solid, liquid, and gas. Each state has different properties based on the arrangement and movement of its particles.

Front

How do particles behave in a solid?

Back

In a solid, particles are closely packed together and vibrate in place, maintaining a fixed shape and volume.

Front

How do particles behave in a liquid?

Back

In a liquid, particles are close together but can move past one another, allowing liquids to take the shape of their container while maintaining a fixed volume.

Front

How do particles behave in a gas?

Back

In a gas, particles are spread out and move freely, filling the entire space available to them.

Front

What is conduction?

Back

Conduction is the transfer of heat energy through direct contact between materials, where faster-moving particles collide with slower-moving ones.

Front

What is convection?

Back

Convection is the transfer of heat energy through the movement of fluids (liquids and gases) caused by differences in temperature and density.

Front

What is radiation?

Back

Radiation is the transfer of heat energy through electromagnetic waves, such as sunlight, which can travel through a vacuum.

Front

What happens to the particles of a substance when it is heated?

Back

When a substance is heated, its particles gain energy, move faster, and may change state (e.g., from solid to liquid or liquid to gas).

Front

What is melting?

Back

Melting is the process of changing a solid into a liquid by adding heat energy.