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WorksheetsAtoms & Molecules
Total questions: 15
Worksheet time: 15mins
Name
Class
Date
1.
The smallest unit of matter
a)
molecule
b)
atom
c)
compound
2.
Elements are made of
a)
many types of atoms
b)
the periodic table
c)
one type of atom
d)
molecules
3.
All matter is made of
a)
energy
b)
atoms
c)
electrons
d)
compounds
4.
What are the 3 particles that make-up the atom?
a)
protons, neutrons, and isotopes
b)
neutrons, isotopes, and electrons
c)
positives, negatives, and electrons
d)
protons, neutrons, and electrons
5.
How many atoms are there in a molecule?
a)
no atoms
b)
1 or more atoms
c)
2 to thousands of atoms
d)
exactly 18 atoms
6.
Two or more atoms chemically bonded together are called a
a)
atom
b)
element
c)
molecule
d)
mixture
7.
How many hydrogen atoms are there in a water molecule (H2 O)?
a)
0
b)
1
c)
2
d)
3
8.
How many carbon atoms are there in a methane molecule (CH4)?
a)
0
b)
1
c)
4
d)
5
9.
What is the TOTAL number of atoms in an ammonia (NH3) molecule?
a)
1
b)
2
c)
3
d)
4
10.
Carbon dioxide (CO2) contains how many atoms of oxygen?
a)
0
b)
1
c)
2
d)
3
11.
How many hydrogen atoms are in a molecule of glucose/sugar (C6H12O6)?
a)
6
b)
12
c)
18
d)
24
12.
The positively charged particles of an atom are
a)
electrons
b)
positrons
c)
neutrons
d)
protons
13.
What is a molecule?
a)
Two or more atoms bonded together
b)
One element
c)
One atom
d)
Solid, Liquid, Gas
14.
The negatively charged particles of an atom are
a)
electrons
b)
positrons
c)
neutrons
d)
protons
15.
The particles of an atom with NO charge are
a)
electrons
b)
positrons
c)
neutrons
d)
protons
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