Review for semester test Part 2 2024

Front

What is a precipitate?

Back

A precipitate is a solid that forms and settles out of a liquid mixture during a chemical reaction.

Front

What happens during a chemical change?

Back

During a chemical change, substances react to form new substances with different properties.

Front

How does increasing the surface area of a solid affect its dissolution rate?

Back

Increasing the surface area of a solid solute increases its rate of dissolution.

Front

What is conduction in terms of heat transfer?

Back

Conduction is the transfer of heat through direct contact between materials.

Front

What drives the movement of tectonic plates?

Back

The movement of tectonic plates is driven by convection currents in the Earth's mantle.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change alters the form of a substance but not its chemical composition, while a chemical change results in the formation of new substances.

Front

What is an example of a physical change?

Back

An example of a physical change is melting ice into water.

Front

What is an example of a chemical change?

Back

An example of a chemical change is rust forming on iron.

Front

What is the role of gravity in tectonic plate movement?

Back

Gravity helps to pull tectonic plates down into the mantle, influencing their movement.

Front

What is convection?

Back

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