PMA 2 Review

Front

What is the state of matter with the largest space between molecules?

Back

Gas

Front

When two plates (aluminum and plastic) are removed from the freezer, what can be said about their temperatures?

Back

The plates have the same temperature.

Front

What subatomic particle carries no charge?

Back

Neutrons

Front

Which of the following is NOT a physical change: crumpled paper, pencil sharpening, shrunken clothing, sour milk?

Back

Sour milk.

Front

What happens when ice cubes melt in a glass of water?

Back

Heat is transferred from the warmer water to the ice cubes.

Front

Define a physical change.

Back

A change that affects one or more physical properties of a substance without altering its chemical composition.

Front

What is the definition of a chemical change?

Back

A change that results in the formation of new chemical substances.

Front

What is the primary characteristic of solids?

Back

Solids have a definite shape and volume.

Front

What is the primary characteristic of liquids?

Back

Liquids have a definite volume but take the shape of their container.

Front

What is the primary characteristic of gases?

Back

Gases have neither a definite shape nor a definite volume.