Unit 2 Matter Review Part 1 (Honors)

Front

What is a chemical property?

Back

A characteristic of a substance that can only be observed during a chemical reaction, such as reactivity with other chemicals.

Front

What is the most common state of matter in the universe?

Back

Plasma.

Front

How does increasing the surface area of a solid affect the speed of dissolving?

Back

It increases the speed of dissolving.

Front

What is another name for a homogeneous mixture?

Back

Solution.

Front

In which phase of matter are the molecules of the substance farthest apart?

Back

Gas.

Front

What is a physical property?

Back

A characteristic of a substance that can be observed without changing its chemical composition, such as color, density, or melting point.

Front

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

Back

A physical change alters the form or appearance of a substance without changing its composition, while a chemical change results in the formation of new substances.

Front

What is a solid?

Back

A state of matter characterized by fixed shape and volume, with closely packed molecules.

Front

What is a liquid?

Back

A state of matter that has a definite volume but takes the shape of its container, with molecules that are close together but can move past one another.

Front

What is a gas?

Back

A state of matter that has no definite shape or volume, with molecules that are far apart and move freely.