Pure Substances and Mixture Review

A pure substance is....

• an element or a mixture

• an element or one compound

• a mixture of elements and compounds

• anything is considered a pure substance as long as it is made well

Which of the following is an element?

• Carbon (C)

• Oxygen gas (O2)

• Table Salt (NaCl)

• Water (H2O)

Which of the following is a compound?

• Nitrogen (N2)

• Hydrogen (H2)

• Helium (He)

• Hydrochloric Acid (HCl)

Mixtures can be

• chemically bonded

• physically separated

• chemically separated

• chemically AND physically separated/bonded

Matter is either a _______ or a pure substance.

What are the two types of pure substance (only use two words)

The word homogeneous literally means it looks the ____ throughout.

Which of the following is an example of a homogeneous mixture?

• sweet tea

• orange juice with pulp

• salad

• soil

Heterogeneous mixture literally means it looks _________ throughout.

Which of the following is an example of a heterogeneous mixture

• water

• vanilla ice cream with sprinkles

• sweet tea

• coffee