Investigation 7/8 Test

Front

What is melting?

Back

Melting is the process where a solid turns into a liquid due to an increase in temperature, which increases the kinetic energy of the particles.

Front

What is dissolving?

Back

Dissolving is the process where a solid (solute) mixes with a liquid (solvent) to form a solution, requiring two substances.

Front

What is kinetic energy?

Back

Kinetic energy is the energy that an object possesses due to its motion. In the context of melting and dissolving, it relates to the movement of particles.

Front

What is thermal energy?

Back

Thermal energy is the energy that comes from the temperature of matter. It is the total kinetic energy of particles in a substance.

Front

Do particles change shape when changing from a liquid to a solid?

Back

False. When a liquid freezes into a solid, the particles do not change shape; they become more organized.

Front

What happens to energy during melting?

Back

During melting, energy is absorbed by the solid, causing its particles to move more freely and transition into a liquid state.

Front

What happens to energy during dissolving?

Back

During dissolving, energy can be absorbed or released depending on the substances involved, affecting the temperature of the solution.

Front

What is the difference between melting and dissolving?

Back

Melting involves a change of state from solid to liquid, while dissolving involves a solid mixing with a liquid to form a solution.

Front

What is an example of a substance that melts?

Back

Ice melting into water is a common example of melting.

Front

What is an example of a substance that dissolves?

Back

Sugar dissolving in water is a common example of dissolving.