Sci6 Lessons 1-6 Mock Test

Substances that are made up of ONLY one type of atom (element) or compound.

• Heterogeneous mixture

• Pure substance

• Suspension

• Homogeneous mixture

A ______________ mixture is one that does not have a uniform composition.

• heterogeneous

• homogenous

• pure substance

Fruit Loops, pizza, and Skittles are examples of ____________________ mixtures.

• heterogeneous

• homogeneous

• pure

Air is:

• An element

• A compound

• A mixture

• None of these

A pure substance that cannot be broken down into other substances by chemical or physical means. 

• compound          
• atom
• mixture 
• element

Separating mixtures based on boiling points.

• Desalination
• Distillation
• Decantation
• Condensation

Which one of the following would you use to separate sand from iron filings?

• a bar magnet
• filter paper
• chromatography paper
• alum

Which substances, when mixed together, maintain their original physical properties?

• gravel and water

• wood chips, water and sand

• sand and water

• all of the above

Homogeneous mixture is one of its classifications. Which is the following is a homogeneous mixture?

• oil and water

• mixed nuts

• pebbles

• seawater

Homogeneous mixture has uniform composition throughout. What

is the best description of a heterogeneous mixture?

• It could break down easily.

• We could easily see the particles.

• We could not easily see the particles.

• It could transfer the particles to another place.