Unit 3 Structure and Matter Review

Front

What is a heterogeneous mixture?

Back

A heterogeneous mixture is a combination of two or more substances where the individual components can be seen and easily separated, such as trail mix.

Front

What is a homogeneous mixture?

Back

A homogeneous mixture is a mixture in which the composition is uniform throughout, and the individual components are not visible, such as saltwater.

Front

What is a pure substance?

Back

A pure substance is made of only one type of atom or molecule and has consistent properties throughout.

Front

What is a mixture?

Back

A mixture consists of two or more substances that are combined but not chemically bonded, allowing for separation by physical means.

Front

How many total atoms are in the compound FeS₂?

Back

There are 3 total atoms in FeS₂ (1 iron atom and 2 sulfur atoms).

Front

How many sulfur (S) atoms are in the compound FeS₂?

Back

There are 2 sulfur atoms in the compound FeS₂.

Front

What is the difference between a pure substance and a mixture?

Back

A pure substance contains only one type of particle, while a mixture contains two or more different particles.

Front

Can a mixture be separated by physical means?

Back

Yes, mixtures can be separated by physical means, such as filtration or distillation.

Front

What is an example of a heterogeneous mixture?

Back

Trail mix is an example of a heterogeneous mixture.

Front

What is an example of a homogeneous mixture?

Back

Coffee with sugar is an example of a homogeneous mixture.