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Worksheetsatoms and molecules
Total questions: 15
Worksheet time: 11mins
Name
Class
Date
1.
What is the smallest?
a)
worm
b)
molecule
c)
galaxy
d)
atom
2.
What is the atomic number of K?
a)
19
b)
39.098
3.
Name this compound: H2O
a)
Water
b)
Carbon dioxide
c)
Hydrogen peroxide
d)
Sulfuric acid
4.
A molecule is
a)
two or more atoms bonded together
b)
one type of atom
c)
smaller than an atom
d)
an element
5.
What is an atom?
a)
A molecule
b)
The smallest unit of matter
c)
Elements bonded together
d)
Water
6.
What atoms make up a water molecule
a)
1 hydrogen, 1 oxygen
b)
1 hydrogen, 2 oxygen
c)
2 hydrogen, 1 oxygen
d)
1 water
7.
Atoms are the basic unit of
a)
matter
b)
energy
c)
protons
d)
electrons
8.
CALCIUM
a)
C
b)
Ca
c)
Cu
d)
Cl
9.
CARBON
a)
C
b)
Ca
c)
Cl
d)
Cu
10.
COPPER
a)
C
b)
Ca
c)
Cu
d)
Cl
11.
IRON
a)
I
b)
Ir
c)
F
d)
Fe
12.
which one can be found on the periodic table
a)
Compound
b)
Element
13.
How many elements are in HHe
a)
3
b)
4
c)
2
d)
5
14.
Element is a
a)
pure substance
b)
compound
c)
mixture
d)
molecule
15.
OXYGEN
a)
O
b)
Ox
c)
Oy
d)
Og
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