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WorksheetsBalancing Chemical Equations WU 2
Total questions: 10
Worksheet time: 10mins
Name
Class
Date
1.
The red numbers in the image below represent ________
a)
subscripts
b)
coefficients
c)
I don't know, and don't want to try
d)
None of the answers are correct
2.
The blue numbers in the image below represent ________
a)
I don't know, and don't want to try
b)
coefficients
c)
subscripts
d)
none of the answers are correct
3.
Black = Carbon (C)
White = Hydrogen (H)
What would be the formula for ethane?
White = Hydrogen (H)
What would be the formula for ethane?
a)
CH4
b)
CH6
c)
C2H2
d)
C2H6
4.
In the equation, 2Mg + O2 ---> 2MgO, which are the reactants?
a)
Mg and O
b)
MgO
c)
Mg and MgO
d)
O and MgO
5.
How many Aluminum are in Al2O3?
a)
3
b)
2
c)
5
6.
How many O's are in Al₂(SO₄)₃
a)
4
b)
12
c)
7
d)
24
7.
How many Hydrogen are in 4H2O?
a)
6
b)
8
c)
2
d)
4
8.
Number of H in 3(NH₄)₂CrO₄
a)
4
b)
2
c)
8
d)
24
9.
How many Magnesium are in 10MgCl2?
a)
10
b)
5
c)
20
10.
How many atoms are there TOTAL in:
H2SO4
H2SO4
a)
6
b)
5
c)
7
d)
3
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