Matter Pre-Assessment

Front

What is a pure substance?

Back

A material that has a constant composition and consistent properties throughout. Examples include elements and compounds.

Front

What is a heterogeneous mixture?

Back

A mixture where the different components can be seen and easily separated. Example: salad.

Front

What is a homogeneous mixture?

Back

A mixture that has a uniform composition throughout. Example: saltwater.

Front

What is an element?

Back

A pure substance that cannot be broken down into simpler substances by chemical means. Examples include hydrogen and oxygen.

Front

What is a compound?

Back

A substance formed when two or more elements chemically bond together. Example: water (H2O).

Front

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

Back

A mixture contains two or more substances that are not chemically combined, while a pure substance has a uniform and definite composition.

Front

What is an example of a pure substance (element)?

Back

Gold (Au) is an example of a pure substance that is an element.

Front

What is an example of a pure substance (compound)?

Back

Sodium chloride (NaCl) is an example of a pure substance that is a compound.

Front

What is the definition of a solution?

Back

A homogeneous mixture where one substance (solute) is dissolved in another (solvent). Example: sugar in water.

Front

What is the definition of a solute?

Back

The substance that is dissolved in a solution. Example: salt in saltwater.