AnswersTX-Integrated Physics and ChemistryLab: Ionic and Covalent Bonds

Mixtures Answers

0 verified answers2 views
1
Free Preview

Hana fills a cup with sandy ocean water. She pours the mixture through a filter. What does she collect that passes through the filter?

A
a sample of pure water
B
a solution of salt in water
C
a suspension of sand in water
D
a colloid of salt in water
2
Free Preview

Which will settle out if allowed to sit on a table?

A
a suspension
B
a colloid
C
a solution
D
a compound
4

Which is a property of every mixture?

A
One substance dissolves in another substance.
B
The molecules of one substance break down in the other.
C
Different samples of a single mixture have different characteristics.
D
One substance can be separated from another through physical means.
5

Which is a characteristic of colloids?

A
are homogeneous mixtures
B
have large dispersed particles
C
will settle out over time
D
are made up of at least two substances
6

What is the correct classification of a mixture in which both a solid and a liquid are visible?

A
a homogeneous mixture and a solution
B
a homogeneous mixture and a suspension
C
a heterogeneous mixture and a solution
D
a heterogeneous mixture and a suspension
7

Otis watches a cooking show on making mayonnaise. The chef dissolves salt and sugar in vinegar. She mixes in an egg yolk, and then mixes in oil until the ingredients are completely blended together. The chef says that it’s great on sandwiches and that it can be stored without separating.Which best describes the purpose of the egg yolk in the recipe?

A
It allows the oil to change from liquid to a gas in order to form bubbles.
B
It acts to hold the vinegar and oil together in a colloid.
C
It helps the vinegar be able to form a solution with the salt and sugar.
D
It mixes with both the vinegar and oil to form a suspension.
8

Julie takes a cold glass of clear, colorless liquid out of the refrigerator and puts it on the table. As the liquid warms up to room temperature, Julie sees bubbles of gas form in the liquid and rise to the surface.Which conclusion is best supported by Julie’s observations?

A
The liquid is a pure substance because it is colorless.
B
The liquid is a mixture because its temperature rises.
C
The liquid is a pure substance because it remains liquid when cold.
D
The liquid is a mixture because it has a gas dissolved in a liquid.
9

Dominic made the table below to organize his notes about mixtures.What mistake did Dominic make?

Question illustration
A
The title should read “Properties of Solutions” because some mixtures do not have all of the properties listed.
B
There is a definite recipe to make each mixture, so the composition of a mixture is set.
C
Although it is possible to have more than one state, it is also possible to have only one state.
D
A single substance can be used to make a mixture if the substance is composed of more than one element.
10

Which would most likely form a homogeneous mixture?

A
10 marbles mixed with 10 small balls
B
a pinch of sugar mixed with a cup of water
C
a pile of big rocks mixed with a bag of sand
D
1 cup of peas mixed with 1 cup of carrots

Did you find these answers helpful?