Classifying Matter: Elements, Compounds, and Mixtures

What is the simplest form of matter that cannot be broken down into anything simpler?

• Compound

• Solution

• Mixture

• Element

Which of the following is an element?

• Water

• Sugar

• Oxygen

• Salt

Which of the following is a characteristic of a compound?

• It can be separated into its elements by physical means.

• It consists of only one type of atom.

• It has a chemical formula.

• It is always a homogeneous mixture.

What is the chemical formula for water?

• O2

• CO2

• NaCl

• H2O

What is the main difference between a compound and a mixture?

• Compounds can be separated by physical means, mixtures cannot.

• Compounds are chemically fused, mixtures are physically blended.

• Compounds have a uniform composition, mixtures do not.

• Compounds are physically blended, mixtures are chemically fused.

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

• Kool-Aid

• Salad

• Sandwich

• Granite

What method can be used to separate a mixture based on different boiling points?

• Filtration

• Chromatography

• Evaporation

• Distillation

What is the term for a solution made of solids?

• Alloy

• Emulsion

• Suspension

• Colloid

Which of the following is a heterogeneous mixture?

• Bronze

• Saltwater

• Salad

• Air

Which of the following is not a pure substance?

• Oxygen

• Water

• Bronze

• Sodium