AnswersS1S Chemistry B E4912 - AGMixtures and Solutions

Mixtures and Solutions Answers

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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
2
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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.
3

The water in a 150-mL flask is poured into a beaker that contains 600 mL of ethyl alcohol. Which substance is the solvent in this mixture?

A
water because it is a very polar compound
B
ethyl alcohol because it has a lower density than water
C
ethyl alcohol because it has a much larger volume than water
D
water because it has dissolved in ethyl alcohol
5

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.
7

Which statement best describes a true solution?

A
A true solution will settle out after a short period of time.
B
A true solution coagulates when heated or boiled.
C
A true solution will not separate in a centrifuge.
D
A true solution has a cloudy appearance.
9

What are homogeneous mixtures of metals commonly called?

A
alloys
B
colloids
C
compounds
D
suspensions
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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