Answers26-27 CFISD TX-Chemistry A CRLab: Physical and Chemical Changes

Mixtures and Solutions Answers

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1
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Mixture A was made by mixing different components together, but it appears to have one phase. Which term best categorizes mixture A?

A
colloid
B
solution
C
emulsion
D
suspension
2
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Which best explains why blood is considered to be a suspension?

A
It has nutrients that cannot be dissolved.
B
It contains particles that can settle out.
C
It has nutrients that are dissolved in its liquid portion.
D
It contains particles that mix on a molecular level.
3

Five milliliters (mL) of alcohol is poured into a beaker that contains 65 mL of 2% saltwater. Which are the solutes in the new solution?

A
salt only
B
alcohol only
C
salt and water
D
alcohol and salt
4

What are homogeneous mixtures of metals commonly called?

A
alloys
B
colloids
C
compounds
D
suspensions
5

Which is a characteristic of a homogeneous mixture that is a liquid?

A
It exhibits the Tyndall effect.
B
Brownian motion is not visible in it.
C
It cannot be separated using filtration.
D
It has at least two phases.
6

Which refers to a mixture that contains more than one phase in which the characteristics of the particles vary throughout the mixture?

A
compound
B
element
C
heterogeneous
D
homogeneous
7

Which best describes the Tyndall effect?

A
the scattering of light by solutes in a mixture
B
the scattering of light by solvent in a solution
C
the scattering of light by solutes in a solution
D
the scattering of light by particles in a mixture
8

Which is a characteristic of a solution?

A
Its particles scatter light.
B
Its particles are evenly distributed.
C
Its particles settle out.
D
It has large suspended particles.
9

In which situation can a mixture always be called a solution?

A
when one of its components is a gas
B
when there is no solvent in the mixture
C
when its components are made up of different types of particles
D
when the mixture is homogeneous
10

Which substance is an example of a colloid?

A
milk
B
tomato juice
C
sand and water
D
sugar and water

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