Fall Semester Flashcard 2

Front

What does it mean when the values on a graph form a straight line?

Back

The speed is constant.

Front

What is the process of heat transfer caused by the rising of hotter, less dense fluids and the falling of cooler, denser fluids?

Back

Convection.

Front

How does temperature affect the rate of dissolution of a solute in water?

Back

Higher temperatures increase the rate of dissolution.

Front

What is a change in the state of matter called?

Back

Physical Change.

Front

What type of change occurs when new substances are formed?

Back

Chemical Change.

Front

What is the definition of convection?

Back

The transfer of heat through the movement of fluids (liquids or gases).

Front

What is conduction?

Back

The transfer of heat through direct contact between materials.

Front

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

Back

A physical change does not create new substances, while a chemical change does.

Front

What happens to the particles of a substance during a physical change?

Back

The arrangement or state of the particles changes, but the substance remains the same.

Front

What is an example of a chemical change?

Back

Burning wood, which produces ash and smoke.