Mole Day Planning Pack
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.
Amount of
solute
(mole)
Concentration
(M)
www.ulster.ac.uk/scienceinsociety/ Volume
3
(dm )
35
LINKING LANGUAGE
O
Concentration Loop
Game T
Mole Day Planning Pack
How many litres are in 1
dm3?
How many cm3 are there in
1 dm3?
How many dm3 is 100 cm3
What is the unit of
concentration?
What is the concentration
of a solution containing 1
mol of glucose in 1 dm3
water?
What is the concentration
of a solution containing 1
mole of glucose in 2 dm3
water?
www.ulster.ac.uk/scienceinsociety/ Avogadro’s number,
6.02 x 1023
Amount of solute (mol)
divided by volume of
solvent (dm3).
LINKING LANGUAGE
*
How is concentration
calculated?
1 litre
T
1000 cm3
0.1 dm3
M, which means mol
dm-3 or mol L-1
1M
36
What is the concentration
of a solution containing 2
mole of glucose in 1 dm3
water?
0.5 M
What is the concentration
of a solution containing 0.2
mole of glucose in 500 cm3
water?
2M
How much NaCl in mol
does 1 dm3 of a 2M solution
contain?
0.4 M
How much NaCl in mol
does 100 cm3of a 2M
solution contain?
2 mole
How much NaCl in mol
does 500 cm3 of a 2M
solution contain?
0.2 mole
How much NaCl in mol
does 500 dm3 of a 0.5M
solution contain?
1 mole
What is the volume in dm3
of a 2 M solution that
contains 3 mole of cobalt
chloride?
www.ulster.ac.uk/scienceinsociety/ LINKING LANGUAGE
Mole Day Planning Pack
T
0.25 mole
37
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 dm3
of a 2 M solution that
contains 0.8 mole of cobalt
chloride?
0.2 dm3 or 200 cm3
What mass of LiF is
required to make 1 dm3 of a
1 M solution. The molar
mass of LiF is 26 g mol-1.
0.4 dm3 or 400 cm3
What mass of NaF is
required to make 0.5 dm3 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 dm3 of
a 0.5 M solution. The molar
mass of KF is 58 g mol-1.
How many K+ ions are
found in 1 dm3 of a 1 M
solution of potassium
iodide, KI?
www.ulster.ac.uk/scienceinsociety/ LINKING LANGUAGE
1.5 dm3
T
26 g
21 g
14.5 g
38