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WorksheetsAtoms Molecules and Compounds
Total questions: 27
Worksheet time: 17mins
Name
Class
Date
1.
All matter is made of
a)
energy
b)
atoms
c)
air
d)
chemistry
2.
The positive particles of an atom are
a)
electrons
b)
atoms
c)
neutrons
d)
protons
3.
The central region of an atom where its neutrons and protons are is called the
a)
nucleus
b)
electron cloud
c)
core
d)
center
4.
Neutrons are
a)
negative
b)
positive
c)
neutral
d)
cows
5.
Electrons are
a)
negative and in the nucleus
b)
positive and outside the nucleus
c)
not in an atom
d)
negative and outside the nucleus
6.
Most of the atom is filled with
a)
electrons
b)
empty space
c)
the nucleus
d)
protons
7.
Which of the following is NOT matter
a)
air
b)
heat
c)
steam
d)
cow
8.
Element is a
a)
pure substance
b)
compound
c)
mixture
d)
molecule
9.
which one only has one type of atom In it.
a)
Element
b)
compound
10.
Is salt (NaCI) a compound or a element
a)
Compound
b)
element
11.
Which of the following represents only a molecule?
a)
H2O
b)
H2
c)
NaCl
d)
CaCO3
12.
Which of the following is not a compound?
a)
HCl
b)
Cl
c)
NaCl
d)
CO2
13.
the smallest particle of matter
a)
atom
b)
element
c)
molecule
d)
compound
14.
made up of one or more of the same type of atom
a)
atom
b)
element
c)
molecule
d)
compound
15.
made up of two or more atoms chemically combined
a)
atom
b)
element
c)
molecule
d)
compound
16.
made up of two or more DIFFERENT atoms/elements chemically combined
a)
atom
b)
element
c)
molecule
d)
compound
17.
How many total atoms are in NO2?
a)
1
b)
2
c)
3
d)
4
18.
Is NO2 an element or a compound?
a)
element
b)
compound
19.
How many elements are in CaCO3?
a)
3
b)
4
c)
5
d)
6
20.
How many atoms are in H3?
a)
1
b)
0
c)
2
d)
3
21.
What is formed when two or more atoms are held together?
a)
Element
b)
Proton
c)
Molecule
d)
Electron
22.
What compound is made of hydrogen and oxygen atoms?
a)
Iron
b)
Gold
c)
Helium
d)
Water
23.
How are clouds, ice, and water alike?
a)
They are made of the same compound.
b)
They contain salt.
c)
They are the same temperature.
d)
They have the same texture.
24.
Atoms is to molecule as element is to
a)
mass
b)
solution
c)
compound
d)
temperature
25.
What is formed when two or more elements join together?
a)
Proton
b)
Compound
c)
Neutron
d)
Mixture
26.
H2O also known as water is an example of
a)
Molecule
b)
Compound
c)
Atom
d)
Element
27.
One particle of H2O is an example of
a)
Atom
b)
Molecule
c)
Element
d)
Proton
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