Chemistry Unit 2: Matter Fall 2024 Final Exam Review

Front

Mass is _______________.

Back

how much matter is in an object.

Front

A __________________ is a substance that has definite physical and chemical properties such as appearance, melting point, and reactivity.

Back

pure substance.

Front

What measurement system is used by scientists around the world?

Back

metric system.

Front

Which of the following is an example of physical change?

Back

dissolving salt in water.

Front

Which of the following is not a physical property of iron?

Back

ability to rust (oxidation).

Front

What is a pure substance?

Back

A material with a constant composition and consistent properties throughout.

Front

Define a mixture.

Back

A combination of two or more substances that retain their individual properties.

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 chemical change?

Back

Burning wood into charcoal.

Front

What is conductivity?

Back

The ability of a substance to conduct electricity or heat.