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Concentrations basics

Total questions: 15

Worksheet time: 33mins

Name
Class
Date
1.

What is the unit of volume used in calculations for concentration?

a)
grams (g)
b)

litres (L) or decimetres cubed (dm3)

c)
meters (m)
d)
joules (J)
2.

Which solution is more diluted?

Solution 1:

1000 mL of water

60g of salt


Solution 2:

500 mL of water

60 g of salt

a)

Not enough information to tell

b)

Solution 1

c)

Solution 2

d)

They are equally diluted

3.

In order to dilute a solution, you need to

a)

add more of the solid

b)

add more water

c)

find the mass

d)

find the volume

4.

Which solution is more concentrated?

Solution 1:

500 mL of water

100 g of salt


Solution 2:

500 mL of water

90 g of salt

a)

Solution 1

b)

Solution 2

c)

They have the same concentration

d)

I have no idea

5.

Concentration is

a)

the amount of solute in the solvent

b)

the amount of solvent in the solute

c)

density

d)

particle size

6.
Solvent is best defined as-
a)
a mixture in which the substances are spread out evenly between one another and cannot be told apart
b)
the ability of a substance to dissolve in another substance
c)
a substance that dissolves in another substance
d)
a substance into which another substance dissolves
7.
You can make a solution more concentrated by adding more __________.
a)
solute
b)
solvent
c)
water
8.
What is a solute?
a)
The substance that does the dissolving in a solution.
b)
The substance that is dissolved into the solution.
c)
The mixing of different substances.
d)
The process in which neutral molecules lose or gain electrons
9.
Which technique could increase or speed up the rate of dissolving?
a)
Allowing the mixture to settle
b)
Stirring the mixture
c)
Adding more powder
d)
Adding more water
10.
If we are making Kool-aid with sugar, Kool-aid powder, and water, which part is the solvent?
a)
water
b)
powder
c)
sugar
d)
powder and sugar
11.

Mass is normally measured in...

a)

Atmospheres

b)

Grams

c)

Litres

d)

Cm3

12.
Solvent is best defined as-
a)
a mixture in which the substances are spread out evenly between one another and cannot be told apart
b)
the ability of a substance to dissolve in another substance
c)
a substance that dissolves in another substance
d)
a substance into which another substance dissolves
13.

Which of the solutions above is the most dilute

a)

A

b)

C

c)

E

d)

They are all the same concentration

14.
A solution is a kind of ________. 
a)
mixture 
b)
compound 
c)
element 
d)
stuff 
15.

The concentration of a bottle of hydrochloric acid is 73 g/dm3. What is the mass of HCl in 2 dm3 of this bottle of acid?

(a)