WorksheetsCounting elements and atoms
Total questions: 10
Worksheet time: 5mins
Name
Class
Date
1.
How do you know when there is a different element?
a)
Capital letter
b)
lower case letter
c)
subscripts
d)
coefficients
2.
How do you count atoms
a)
subscripts only
b)
coefficients only
c)
subscripts and coefficients
d)
capital letters
3.
How many elements are in H2O
a)
3
b)
2
c)
1
d)
4
4.
How many elements are in CO2
a)
3
b)
4
c)
1
d)
2
5.
How many elements are in C6H12O6
a)
3
b)
6
c)
24
d)
4
6.
How many ATOMS are in H2O2
a)
4
b)
2
c)
1
d)
8
7.
How many ATOMS are in CO
a)
1
b)
2
c)
4
d)
3
8.
How many elements are in 2C6H12O6
a)
48
b)
24
c)
3
d)
2
9.
How many ATOMS are in 2H2O2
a)
4
b)
2
c)
8
d)
6
10.
What's the job of the coefficient?
a)
Tells how many molecules, so you multiply
b)
Addition
c)
Add it to the subscripts
d)
Tells how many molecules, so you divide
100 %
