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WorksheetsConcentrations of solutions
Total questions: 29
Worksheet time: 16mins
Name
Class
Date
1.
How do you calculate the molarity of a solution?
a)
By tasting it.
b)
Dividing the moles of solute by the L of solution
c)
Dividing the moles of solute by the kg of solvent
d)
By adding the sum of the molecular weight of the elements in the substance.
2.
A 3 M solution has how many moles per liter?
a)
1
b)
2.5
c)
4
d)
3
3.
Diluting a solution reduces the total number of moles per liter of solution.
a)
True
b)
False
4.
Moles of solute= Molarity x Volume
a)
TRUE
b)
FALSE
5.
How does a solution become supersaturated?
a)
dissolve lots of solute in it.
b)
dissolve a little solute in it.
c)
dissolve more solute than you should be able to.
d)
dissolve a super amount of solvent in it.
6.
What is the difference between concentration and saturation?
a)
concentration is a fixed % and saturation refers to amount of solute dissolved
b)
concentration refers to amount of solute dissolved and saturation is a fixed %.
c)
Nothing
d)
All of the above
7.
When a solvent contains as much of the solute as it can hold, the solution is said to be
a)
supersaturated
b)
diluted
c)
saturated
d)
unsaturated
8.
For most solutions, solubility (how much solute can dissolve in the solvent) generally _________ as temperature increases.
a)
increases
b)
decreases
c)
stays the same
d)
dances around
9.
How many L would you need to make a 1 M solution if you have 6 Mol of Sodium Hydroxide?
a)
2
b)
3
c)
4
d)
6
10.
Molarity is measured in
a)
moles per kg
b)
moles per L
c)
moles per kJ
d)
moles per mL
11.
The ___ is the thing being dissolved in a solution.
a)
solute
b)
solvent
c)
substance
d)
stuff
12.
Mixture of two or more substances uniformly dispersed.
a)
solute
b)
immiscible
c)
solution
d)
concentration
13.
This type of mixture contains two or more substances that are visibly distinguishable.
a)
homogeneous
b)
heterogeneous
c)
solution
d)
colloid
14.
This is a heterogeneous mixture in which particles settle out unless it is constantly stirred.
a)
colloid
b)
suspension
c)
solution
d)
alloy
15.
Which is an example of a solute?
a)
Egg whites
b)
Sugar
c)
Water
d)
Acetone
16.
Which is an example of a solvent?
a)
Salt
b)
Egg whites
c)
Water
d)
Sugar
17.
What is ionization?
a)
The process in which charged molecules lose or gain electrons
b)
Breaking the solute into small pieces and spreading throughout the solvent.
c)
The process in which an ionic compound separates into ions in a solution.
d)
The process in which neutral molecules lose or gain electrons
18.
What is a colloid
a)
a partical that keeps the same original partical of a drink
b)
a mixture that contains undisolved particals that do not settle out
19.
What is a solvent
a)
the liquid in which a solute is dissolved to form a solution.
b)
Another word for solution
c)
A thing that make drinks turn colors
d)
Its a metal molecole
20.
how does a solution form
a)
A solution forms when the particals of the solute seperate from each other and circle the solvent
b)
you mix things together.
21.
What does it mean to dilute a solution?
a)
lower the concentration of solute per solvent
b)
increase the concentration of solute per solvent
22.
What is the purpose of the pH scale?
a)
to describe solubility
b)
to describe concentration of hydroxide ions
c)
to describe the concentration of hydrogen ions
d)
to tell the color of something
23.
Water is considered the universal solvent because...
a)
it dissolves to many solutes.
b)
the Earth is mostly made of it.
c)
humans are mostly comprised of it.
d)
it's so useful.
24.
An alloy is a(n)
a)
liquid dissolved in a metal
b)
a type of liquid solution
c)
a metal solution
d)
a metal dissolved in a liquid
25.
The "like dissolves like" rule is the reason why water cannot dissolve
a)
salt
b)
sugar
c)
vinegar
d)
oil
26.
Molality is measured in
a)
mols per L
b)
mols per kg
c)
mols per kJ
d)
mols per mL
27.
Moles per kilograms is the unit used for measuring
a)
enthalpy
b)
effervescence
c)
molarity
d)
molality
28.
The unit of measurement for molarity is
a)
molal
b)
molar
c)
moles
d)
molat
29.
The unit of measurement for molality is
a)
molars
b)
molals
c)
moles
d)
mollas
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