Chapter 3 - Matter

Front

Is burning wood a chemical or physical change?

Back

Chemical change: A process where substances combine or break apart to form new substances.

Front

A combination that can be separated by physical processes is a .....

Back

Mixture: A combination of two or more substances that retain their individual properties and can be separated by physical means.

Front

The mass of a lead cube is 64 grams. This is an example of?

Back

Physical extensive property: A property that depends on the amount of substance present.

Front

Which of the following is a sign that a chemical reaction has occurred?

Back

Formation of a gas: One of the indicators of a chemical reaction, along with color change, temperature change, and precipitate formation.

Front

When particles vibrate around moving points, it is classified as a _______.

Back

Liquid: A state of matter where particles are close together but can move past one another.

Front

What is a pure substance?

Back

A material made of only one type of particle, which can be an element or a compound.

Front

Define a compound.

Back

A substance formed when two or more elements chemically bond together in a fixed ratio.

Front

What is an element?

Back

A pure substance that cannot be broken down into simpler substances by chemical means.

Front

What is a physical change?

Back

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

Front

What is a chemical property?

Back

A characteristic of a substance that can only be observed during a chemical reaction.