Physical Science Unit 6 Test

Explain the difference between homogenous and heterogenous mixtures.

• Homogenous mixtures have a uniform composition, while heterogenous mixtures have a non-uniform composition.

• Homogenous mixtures have a non-uniform composition, while heterogenous mixtures have a uniform composition.

• Both have uniform compositions.

• Both have non-uniform compositions.

Give two examples of homogenous mixtures, as well as two examples of heterogenous mixtures.

What are some ways that you can speed up dissolving? How does this happen?

A mixture of metallic elements is called a(n):

• compound

• solution

• alloy

• mixture

In the slideshow it states, “Solid solutions are made by melting both solids then mixing together while still molten”. Although, trail mix is a solid, but you do not melt anything in trail mix to get it all together. Why is this?

• Trail mix is a heterogeneous mixture, not a solid solution.

• Trail mix is a solid solution that doesn't require melting.

• Trail mix is a liquid solution.

• Trail mix is a gaseous solution.

How is an alloy created?

• By mixing two or more metals together

• By heating a single metal

• By cooling a metal rapidly

• By adding water to a metal

What kind of mixture is a solution?

• Homogeneous mixture

• Heterogeneous mixture

• Colloidal mixture

• Suspension

In a solution, what do you call the substance that the something is dissolved in?

• Solvent

• Solute

• Solution

• Suspension

In a solution, what do you call the substance that is being dissolved?

• Solvent

• Solute

• Solution

• Suspension

The carbonation of a soft drink runs out when you keep opening it because:

• The gas escapes each time the bottle is opened.

• The liquid absorbs the gas.

• The temperature of the drink increases.

• The drink loses its flavor.