O Concentration Loop Game

O
Mole Day Planning Pack
Concentration Loop
Game
The questions on this loop game relate to the use of the mole concept in calculating
concentrations of solutions, and the manipulation of the formula:
concentration (M) = amount of solute (mol) volume of solvent (dm3 ÷
)
It may help students to display the formula triangle (see below).
To play:
Cut the 20 strips horizontally, shuffle, and give one to each student. Calculators may
also be useful.
Ask the student with the strip of paper with a * to begin by asking the question on the
left hand side of their paper.
Ask all students to read the answers that appear on the right hand side of their paper.
The student who has the correct answer should read their answer aloud.
They should then ask the question on the left hand side of their paper
…and so on, until the loop is completed!
To introduce a competitive element, do the same loop with different classes, e.g. a lower
sixth and an upper sixth class and see who manages it fastest!
All of the questions use the relationship in the triangle.
Concentration
(M)
Amount of
solute
(mole)
Volume
(dm 3 )
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LINKING LANGUAGE
T

Mole Day Planning Pack
*
How is concentration
calculated?
How many litres are in 1
dm 3 ?
How many cm 3 are there in
1 dm 3 ?
How many dm 3 is 100 cm 3
What is the unit of
concentration?
What is the concentration
of a solution containing 1
mol of glucose in 1 dm 3
water?
What is the concentration
of a solution containing 1
mole of glucose in 2 dm 3
water?
Avogadro’s number,
6.02 x 10 23
Amount of solute (mol)
divided by volume of
solvent (dm 3 ).
1 litre
1000 cm 3
0.1 dm 3
M, which means mol
dm -3 or mol L -1
1 M
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LINKING LANGUAGE
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Mole Day Planning Pack
What is the concentration
of a solution containing 2
mole of glucose in 1 dm 3
water?
What is the concentration
of a solution containing 0.2
mole of glucose in 500 cm 3
water?
How much NaCl in mol
does 1 dm 3 of a 2M solution
contain?
How much NaCl in mol
does 100 cm 3 of a 2M
solution contain?
How much NaCl in mol
does 500 cm 3 of a 2M
solution contain?
How much NaCl in mol
does 500 dm 3 of a 0.5M
solution contain?
What is the volume in dm 3
of a 2 M solution that
contains 3 mole of cobalt
chloride?
0.5 M
2 M
0.4 M
2 mole
0.2 mole
1 mole
0.25 mole
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LINKING LANGUAGE
T

Mole Day Planning Pack
What is the volume of a 1
M solution that contains 0.2
mole of fructose?
What is the volume in dm 3
of a 2 M solution that
contains 0.8 mole of cobalt
chloride?
What mass of LiF is
required to make 1 dm 3 of a
1 M solution. The molar
mass of LiF is 26 g mol -1 .
What mass of NaF is
required to make 0.5 dm 3 of
a 1 M solution. The molar
mass of NaF is 42 g mol -1 .
What mass of KF is
required to make 0.5 dm 3 of
a 0.5 M solution. The molar
mass of KF is 58 g mol -1 .
How many K + ions are
found in 1 dm 3 of a 1 M
solution of potassium
iodide, KI?
1.5 dm 3
0.2 dm 3 or 200 cm 3
0.4 dm 3 or 400 cm 3
26 g
21 g
14.5 g
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LINKING LANGUAGE
T