WorksheetsSolutions and Mixtures Worksheet
Total questions: 59
Worksheet time: 49mins
Name
Class
Date
1.
What is a solvent?
a)
The substance that does the dissolving in a solution.
b)
The substance that is being dissolved in a solution.
c)
The mixing of different substances.
d)
The process in which neutral molecules lose or gain electrons
2.
This is the part of a solution that dissolves
a)
Solute
b)
Solvent
c)
Solution
d)
Mixture
3.
The concentration of a mixture can be increased in which of the following ways?
a)
Heating the mixture
b)
Adding more water “solvent”
c)
Adding more powder “solute”
d)
Stirring the mixture
4.
In the above picture, a powder is about to be poured into the liquid. Which of the following should be done to make this powder dissolve faster?
a)
stir the powder in the liquid
b)
freeze the mixture
c)
add more powder to the liquid
d)
store the mixture in a dark place
5.
A solution that is considered dilute would be....
a)
Dark in color
b)
Have a strong scent
c)
Have a large amount of solute
d)
Have a small amount of solute
6.
salt water is a
a)
compound
b)
element
c)
heterogeneous mixture
d)
solution
7.
what a solute dissolves in
a)
solvent
b)
mixture
c)
solute
8.
Kool-Aid - Powder, sugar, and water
Identify the solvent
Identify the solvent
a)
water
b)
powder
c)
sugar
d)
powder and sugar
9.
Lemonade - Water, lemon juice, and sugar
Identify the solute
Identify the solute
a)
water
b)
lemon juice
c)
sugar and lemon juice
10.
When solute dissolves into a solvent it is called a _____________.
a)
mixture
b)
solution
c)
element
11.
When a certain amount of solvent cannot hold any more solute it is called a ________ solution.
a)
Diluted
b)
Saturated
12.
When Koolaid mix is light colored and tastes watery it is a _______ solution.
a)
saturated
b)
diluted
13.
When a Koolaid mix in water is dark in color and very sweet it is a __________ solution.
a)
concentrated
b)
Diluted
14.
To make a solute dissolve more quickly i n a solvent which would you do?
a)
Put it in cold water and stir it
b)
Put it in warm water and stir it
15.
Which solute does not increase in solubility as temperature rises?
a)
NH3
b)
NaNO3
c)
KNO3
d)
NaCl
16.
If I added 27 grams of salt to water and separated the solution by evaporation, what amount of salt would be left behind?
a)
20 grams
b)
0 grams
c)
27 grams
d)
10 grams
17.
Which solute is the least soluble at 90 ⁰C?
a)
SO2
b)
KClO3
c)
KI
d)
HCl
18.
At approximately what temperature does the solubility of sodium chloride, NaCl, match the solubility of potassium dichromate, K2Cr2O7?
a)
60 ºC
b)
30 ºC
c)
50 ºC
d)
83 ºC
19.
What is the minimum temperature needed to dissolve at least 10 g of KClO3?
a)
25 ⁰C
b)
10 ⁰C
c)
5 ⁰C
d)
100 ⁰C
20.
At 40˚C, at what point is the solution saturated with KCl?
a)
20g
b)
30g
c)
40g
d)
50g
21.
At 50˚C, describe the saturation level if there are 70g of KBr present in the solution
a)
Saturated
b)
Super Saturated
c)
Unsaturated
22.
Contains the maximum amount of dissolved solute
a)
unsaturated solution
b)
supersaturated solution
c)
saturated solution
23.
Which food is the most acidic?
a)
bananas
b)
lemon juice
c)
orange juice
d)
fish
24.
If you are burned with a strong base, what should you use to safely neutralize it
a)
vinegar (pH = 4)
b)
water (pH = 7)
c)
ammonia (pH = 9)
d)
baking soda (pH = 10)
25.
What does it mean to be "Soluble" ?
a)
Capable of being a solid.
b)
To have soul.
c)
Capable of being dissolved.
d)
To sink.
26.
An unsaturated solution is one that....
a)
contains the maximum amount of dissolved solute.
b)
contains less solute than a saturated solution.
c)
contains more solute than a saturated solution.
d)
is the amount of a substance required to form a saturated solution.
27.
90 grams of sodium nitrate (NaNO3) are put into 100 grams of water and stirred. The final
mixture has a temperature of 20°C. About how many grams of the sodium nitrate dissolved?
mixture has a temperature of 20°C. About how many grams of the sodium nitrate dissolved?
a)
23
b)
73
c)
80
d)
88
28.
Students are asked to make statements about the solubility graph above. Which student does
the best job of communicating the general features of the graph?
the best job of communicating the general features of the graph?
a)
Most salts require 100 grams of water in order to dissolve completely.
b)
Table salt has the average solubility of all salts.
c)
The solubility of most salts increases with increasing temperature.
d)
Most curves show a decreasing slope as the temperature rises.
29.
Which of the following would decrease the rate of solution when dissolving a solid in water?
a)
Raise the temperature of the solution
b)
Crush the solid before mixing
c)
Stir the solution after mixing
d)
Use a single cube of solid
30.
A way to increase the amount of sugar dissolved in tea is to
a)
crush and cool
b)
crush and leave alone
c)
crush and heat
31.
If you add more sugar to tea that is already saturated (without changing the temperature):
a)
some of the sugar will dissolve
b)
the sugar will fall out of the solution
c)
all of the sugar will dissolve
32.
A student adds salt to water in a test tube but no more salt dissolves. The solution is:
a)
supersaturated
b)
saturated
c)
unsaturated
33.
This solution would be
a)
Saturated
b)
Unsaturated
c)
Supersaturated
d)
Dissolved
34.
This graph represents a(n) ___ solution
a)
saturated
b)
supersaturated
c)
unsaturated
d)
undefined
35.
How many grams of sodium nitrate, NaNO3, are soluble in 100 g of water at 10 ºC?
a)
80 grams
b)
100 grams
c)
40 grams
d)
10 grams
36.
Which solute is the most soluble at 10 ⁰C?
a)
KI
b)
KClO3
c)
NH4Cl
d)
NH3
37.
As the water temperature increases from 20°C to 90°C, how many more grams of substance Copper Sufate will dissolve in 100 grams of water?
a)
30 g
b)
40 g
c)
50 g
d)
90 g
38.
How many more grams of potassium bromide than copper sulfate can dissolve at 50 °C
a)
45 g
b)
40 g
c)
50 g
d)
60 g
39.
Which statement best describes the relationship between water temperature and solubility for the substances shown in the graph?
a)
As water temperature increases, solubility decreases
b)
As water temperature increases, solubility increases.
c)
As water temperature increases, solubility increases and then decreases
d)
As water temperature increases, solubility decreases and then increases.
40.
Which of the following will cause a lump of sugar to dissolve faster?
a)
chopping it into pieces
b)
stop stirring the water
c)
adding more sugar
d)
adding cold water
41.
Which of the following best separates a mixture of iron filings and black pepper?
a)
magnet
b)
filter paper
c)
triple beam balance
d)
voltmeter
42.
The equipment shown at the right can be used to separate the parts of a mixture based on
a)
boiling points
b)
melting point
c)
magnetism
d)
particle size
43.
A mixture of water, sugar, and sand is poured into a filter. What passes through the filter?
a)
only the water
b)
only the sand
c)
water and sugar
d)
water and sand
44.
Which of the following materials is soluble in water?
a)
oil
b)
grease
c)
pepper
d)
sugar
45.
A bottle of iced tea says shake well before using. After shaking it, you notice that the iced tea is cloudy. This iced tea can best be describe as a
a)
solution
b)
solvent
c)
suspension
d)
solute
46.
After a solid is added to a liquid, it is found that all of the substances are spread out evenly. This combination of substances is best described as
a)
a mixture, but not a solution
b)
a mixture and a solution
c)
a solution, but not a mixture
d)
neither a mixture nor a solution
47.
The rate of solubility of a solid in a liquid can be increased by
a)
stirring the liquid
b)
using larger solute particles
c)
cooling the liquid
d)
decreasing the surface area of the solid
48.
An increase in the rate of dissolving is caused by a decrease in the
a)
temperature
b)
particle size
c)
amount of stirring
d)
surface area
49.
Sand and iron particles that are similar in size and color are mixed together in a beaker. What method can be used to separate these particles?
a)
Use tweezers to separate them.
b)
Use a magnet to separate them.
c)
Add water to the mixture.
d)
Pour the mixture into a filter.
50.
Which of the following substances is soluble in water?
a)
oil
b)
salt
c)
sand
d)
grease
51.
Which of the following dissolves the fastest?
a)
sugar cubes in iced tea
b)
granulated sugar in iced tea
c)
sugar cubes in hot tea
d)
granulated sugar in hot tea
52.
Which process can separate dissolved salt from water?
a)
filtration
b)
condensation
c)
evaporation
d)
centrifuging
53.
According to the pH range which substance is more acidic than lemon juice
a)
Hydrochloric acid
b)
cabbage
c)
milk
54.
Which is an acid?
a)
Turns blue litmus red
b)
Turns red litmus blue
c)
Has a pH of 11
d)
Has a pH of 7
55.
What might happen if you mixed a strong acid with an equally strong base?
a)
You would see an explosive chemical reaction.
b)
The acid would destroy the base.
c)
The base would destroy the acid.
d)
You'd wind up with a pH-neutral substance.
56.
Which of the following substances is basic?
a)
Apple juice
b)
Ginger ale
c)
Baking soda
d)
Distilled water
57.
Pure water is _______ on the pH scale.
a)
Acid
b)
Base
c)
Neutral
58.
Which is the stronger acid?
a)
pH 1
b)
pH 4
c)
pH 8
d)
pH 13
59.
If the pH of a solution is 9, it is a....
a)
acid
b)
base
c)
both
d)
none
100 %
