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WorksheetsAtoms
Total questions: 32
Worksheet time: 21mins
Name
Class
Date
1.
Who created the first atomic model in 400 BC?
a)
Dalton
b)
Democritus
c)
Rutherford
d)
Bohr
2.
Who atomic model said electrons orbit the atom like planets orbit the sun
a)
Einstein
b)
Thomson
c)
Bohr
d)
Dalton
3.
Particles in an atom that are neutral and have no charge are
a)
negatrons
b)
electrons
c)
neutrons
d)
protons
4.
an atom with atomic number 6 would have how many protons
a)
6
b)
12
c)
3
d)
cannot be determined
5.
the central region of an atom where its neutrons and protons are is its
a)
nucleus
b)
electron cloud
c)
core
d)
center
6.
The positive particles of an atom are
a)
electrons
b)
positrons
c)
neutrons
d)
protons
7.
all matter is made of what
a)
energy
b)
atoms
c)
electrons
d)
compounds
8.
electrons have this type of charge?
a)
negative
b)
positive
c)
neutral
9.
Whose atomic model was called the "plum pudding model?"
a)
Dalton
b)
Rutherford
c)
Thomson
d)
Schrodinger
10.
Who created the modern atomic model?
a)
Dalton
b)
Schrodinger
c)
Bohr
d)
Democritus
11.
Which element has the atomic number 10?
a)
Neon
b)
Flourine
c)
Potassium
d)
Hydrogen
12.
How many protons are in the element, "Sodium?"
a)
23
b)
11
c)
13
d)
14
13.
How many electrons are in the element oxygen?
a)
7
b)
10
c)
8
d)
9
14.
"C" is the element symbol for which element?
a)
calcium
b)
carbon
c)
chlorine
d)
cadmium
15.
True or False? Isotopes are atoms of the same element that differ in mass number and number of neutrons
a)
True
b)
False
16.
What is the atomic symbol for sodium?
a)
Na
b)
So
c)
NaCl
d)
S
17.
What is the atomic number for an element with three protons?
a)
2
b)
1
c)
3
d)
6
18.
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
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.
What does the nucleus consist of?
a)
Protons + Electrons
b)
Neutrons + Electrons
c)
Atoms
d)
Protons + Neutrons
22.
Which particle has a similar mass to a proton?
a)
Electron
b)
Neutron
c)
Photon
d)
Marble
23.
The smallest part of an element is known as the
a)
Periodic Table
b)
Atom
c)
Group
d)
Period
24.
How many neutron are in the atom "K"?
a)
7
b)
2
c)
39
d)
12
25.
What is the number of protons that the element in this image contain?
a)
14
b)
7
c)
15
d)
18
26.
The first energy level can hold up to, how many electrons?
a)
8
b)
4
c)
2
d)
5
27.
The second energy level can hold up to, how many electrons?
a)
2
b)
8
c)
10
d)
12
28.
How many valence eletrons are in the atom "Mg"?
a)
1
b)
5
c)
3
d)
9
29.
What is the atomic mass of "F"
a)
9
b)
18
c)
17
d)
19
30.
How many the valence eletrons does "Al" have?
a)
5
b)
10
c)
3
d)
13
31.
What the number of eletrons that this carbon have?
a)
10
b)
12
c)
6
d)
14
32.
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
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