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Atoms Basics

Total questions: 30

Worksheet time: 24mins

Name
Class
Date
1.

all matter is made of -

a)

energy

b)

atoms

c)

electrons

d)

compounds

2.
The positive particles of an atom are 
a)
electrons 
b)
positrons 
c)
neutrons 
d)
protons 
3.
the central region of an atom where its neutrons and protons are is its 
a)
nucleus 
b)
electron cloud
c)
core 
d)
center 
4.
an atom with atomic number 6 would have how many protons 
a)
6
b)
12
c)
3
d)
cannot be determined 
5.
Particles in an atom that are neutral and have no charge are 
a)
negatrons 
b)
electrons 
c)
neutrons 
d)
protons 
6.
True or False? Neutrons have a negative charge
a)
True
b)
False
7.
What is the atomic number for an element with three protons?
a)
2
b)
1
c)
3
d)
6
8.

What does the 1.00794 stand for?

a)

Hydrogen

b)

atomic number "APE"

c)

atomic mass "MAN"

d)

atomic explosion

9.
Which of the following is a negatively charged subatomic particle?
a)
Electron
b)
Proton
c)
Neutron
d)
Quark
10.
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)
They are moving everywhere.
11.
"C" is the element symbol for which element?
a)
calcium
b)
carbon
c)
chlorine
d)
cadmium
12.
What is the atomic symbol for sodium?
a)
Na
b)
So
c)
NaCl
d)
S
13.
Most of the mass in an atom is concentrated in the...
a)
electrons
b)
nucleus
c)
protons
d)
empty space
14.

What is the number of protons that the element in this image contains?

a)

14

b)

7

c)

15

d)

18

15.
The charge of a neutron in an atom.
a)
positive
b)
negative
c)
neutral
d)
+1
16.

What does the atomic number tell you about an atom?

a)

The number of electrons

b)

The number of protons

c)

The number of protons and electrons

d)

The number of atoms

17.
How many electrons can fit in the 2nd energy level?
a)
2
b)
4
c)
8
d)
18
18.

How is the number of neutrons calculated from the periodic table?

a)

atomic number

b)

atomic mass

c)

Chemical Symbol

d)

M - A = N

19.
Who came up with this model of an atom?
a)
J.J. Thompson
b)
Ernest Rutherford
c)
Neils Bohr
d)
James Chadwick
20.
How many electrons does Chlorine have?
a)
17
b)
35
c)
18
d)
36
21.
How many protons are in this element?
a)
79
b)
196
c)
117
d)
Cannot be determined
22.
Which statement best describes an electron?
a)
Smaller mass than a proton and a negative charge
b)
Smaller mass than a proton and a positive charge
c)
Greater mass than a proton and a negative charge
d)
Greater mass than a proton and a positive charge
23.
To calculate the number of neutrons an atom has you must -
a)
subtract the atomic number from the mass number
b)
look at the atomic number
c)
add the atomic number to the mass number
d)
you cannot calculate the number of neutrons
24.

How many NEUTRONS does an atom of Beryllium have?

a)

4

b)

9

c)

5

25.

What element is represented here?

a)

Beryllium

b)

Hydrogen

c)

Lithium

d)

Helium

26.

How many protons does the atom of Nitrogen have?

a)

7

b)

14

c)

21

27.

What element is represented by this atom?

a)

Boron

b)

Oxygen

c)

Carbon

d)

Nitrogen

28.

How many protons does an atom of Carbon have?

a)

12

b)

6

c)

12.011

29.

How many electrons does an atom of Gold have?

a)

197

b)

196.97

c)

79

30.

How many neutrons does an atom of Chlorine have?

a)

17

b)

35

c)

18

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