Using Mass in Chemical Equations
Authored by J Furmston-Evans
Chemistry
9th - 12th Grade
Used 4+ times
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10 questions
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1.
FILL IN THE BLANK QUESTION
1 min • 1 pt
What phrase describes the idea that matter can
neither be created nor destroyed as part
of a chemical reaction
2.
FILL IN THE BLANK QUESTION
3 mins • 1 pt
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Because the reaction would create an explosion
Because conservation of mass only applies to endothermic reactions
Because this equation hasn't been balanced
Because several of the compounds involved are gases
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
48 RAM
38 RAM
108 RAM
76 RAM
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is the symbol for
Relative Formula Mass?
Fr
Fm
Mf
Mr
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Using equations and
finding the formula mass (Mr)
of a compound:
Step one will be to:
Count the number of atoms of each element in a compound
Count the number of elements of each atom in a compound
Count all atoms from all compounds on one side of an equation
Cound the letters in a chemical formula
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
You are finding the Mr of FeS (fools gold)
and know that
RAM of Fe is 56
RAM of S is 32
will you...
Multiply
56 x 32
for Mr of
1792
Add 56 and 32 (88)
then x 2
(no. of atoms in compound)
for Mr of 176
Just add 56 and 32, because there is only one atom of each,
for Mr of 88
Doesn't apply - we don't know the reactants so can't make the calculation
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