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WorksheetsAtoms and Matter
Total questions: 25
Worksheet time: 24mins
Name
Class
Date
1.
How many elements are found in this compound?
CaCO4
CaCO4
a)
1
b)
6
c)
4
d)
3
2.
What is the number of protons that the element in this image contain?
a)
14
b)
7
c)
15
d)
18
3.
The first energy level can hold up to how many electrons?
a)
8
b)
4
c)
2
d)
5
4.
What is the atomic mass of "F" (you might need to round to the nearest whole number)
a)
9
b)
18
c)
17
d)
19
5.
all matter is made of what
a)
energy
b)
atoms
c)
electrons
d)
compounds
6.
The positive particles of an atom are
a)
electrons
b)
positrons
c)
neutrons
d)
protons
7.
the central region of an atom where its neutrons and protons are is its
a)
nucleus
b)
electron cloud
c)
core
d)
center
8.
an atom with atomic number 6 would have how many protons
a)
6
b)
12
c)
3
d)
cannot be determined
9.
Particles in an atom that are neutral and have no charge are
a)
negatrons
b)
electrons
c)
neutrons
d)
protons
10.
An atoms overall charge is
a)
positive
b)
depends on its mood
c)
neutral
d)
negative
11.
Which of the following is a negatively charged subatomic particle?
a)
Electron
b)
Proton
c)
Neutron
d)
Quark
12.
The particles that are found in the nucleus of an atom are
a)
neutrons and electrons
b)
electrons only
c)
protons and neutrons
d)
protons and electrons
13.
The atomic mass of an elements is the total number of which particles in the nucleus?
a)
neutrons
b)
protons
c)
electrons
d)
protons and neutrons
14.
Which of the following is a positively charged subatomic particle found in the nucleus of an atom?
a)
Electron
b)
Proton
c)
Neutron
d)
Quark
15.
Where are electrons of an atom found?
a)
Nucleus
b)
Electron Cloud
c)
Some are in the nucleus and some in the electron cloud.
d)
on top of the nucleus
16.
"C" is the element symbol for which element?
a)
calcium
b)
carbon
c)
chlorine
d)
cadmium
17.
What is the atomic symbol for sodium?
a)
Na
b)
So
c)
NaCl
d)
S
18.
What is the atomic number for an element with three protons?
a)
2
b)
1
c)
3
d)
6
19.
A particle that moves around the nucleus is a(n)...
a)
Proton
b)
Neutron
c)
Electron
d)
Quark
20.
Most of the mass in an atom is concentrated in the...
a)
electrons
b)
nucleus
c)
protons
d)
empty space
21.
How many neutrons are in the atom "K"?
a)
7
b)
2
c)
39
d)
20
22.
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
23.
These can be separated by physical means.
a)
elements
b)
compounds
c)
mixtures
d)
atoms
24.
How many atoms make up 1 molecule of H2O?
a)
3
b)
2
c)
1
d)
0
25.
An example of an element would be ____________.
a)
H2O
b)
NaCl
c)
Co2
d)
Al
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