WorksheetsRetake practice: Counting atoms/balancing equations
Total questions: 13
Worksheet time: 12mins
Name
Class
Date
1.
How many atoms in this formula?
Mg + HCl
(a)
2.
How many atoms in this formula?
3 CO2
(a)
3.
How many atoms in this formula?
4Fe
(a)
4.
How many atoms in this formula?
MgCl2
(a)
5.
How many atoms in this formula?
KClO3
(a)
6.
How many atoms in this formula?
2H2O
(a)
7.
How many atoms in this formula?
4Fe + 3CO2
(a)
8.
How many atoms in this formula?
KCl + O2
(a)
9.
How many atoms in this formula?
MgCl2 + H2
(a)
10.
How many potassium atoms in this formula?
Ca3(PO4)2
(a)
11.
How many molecules of CaCl2 in this formula?
3CaCl2 + 2Na2PO4
(a)
12.
Which of the following contains the most molecules?
a)
3NaCl
b)
4H2O
c)
7CH4
d)
2C3H8
13.
Which of the following formulas has the most elements?
a)
Ca3(PO4)2
b)
CO
c)
FeO3
d)
NaHCO3
100 %
