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.

(a)  

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

(a)  

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.