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WorksheetsAtomic Structure
Total questions: 31
Worksheet time: 20mins
Which scientist does the planetary model of the atom belong to?
Rutherford
Dalton
Bohr
Democritus
Thomson
Which scientist does the plum pudding or chocolate chip ice cream model of the atom belong to?
Rutherford
Thomson
Dalton
Bohr
Aristotle
Which scientist does this model of the atom belong to?
Rutherford
Dalton
Thomson
Bohr
Schrodinger
Which scientist does this model of the atom belong to?
Rutherford
Dalton
Democritus
Bohr
Thomson
Which of the following observations was NOT made by Rutherford during his gold foil experiment?
Most of alpha particles passed straight through the gold foil.
Some of the alpha particles deflected off of the gold foil at different angles.
Some of the alpha particles bounced straight back at him when they hit the gold foil.
All of the alpha particles deflected off of the gold foil at different angles.
Why was JJ Thomson's cathode ray tube experiment so important to modern atomic theory?
He discovered protons, which meant there was something smaller than an atom.
He discovered neutrons, which meant there was something smaller than an atom.
He discovered the nucleus, which meant there was something smaller than an atom.
He discovered electrons, which meant there was something smaller than an atom.
What is the atomic number of this element?
22
47.867
48
The average of 22 and 47.867
What is the atomic mass of this element?
9
18.998
F
19
How many neutrons does this element have?
3
2
1
0
How many protons does this element have?
4
3
2
1
What is the difference between carbon-12 and carbon-14?
The number of protons.
The number of neutrons.
The number of electrons.
There is no difference between them.
Which of the following is the correct order the subatomic particles were discovered, from first to last?
neutron, proton, electron
proton, electron, neutron
electron, proton, neutron
electron, neutron, proton
Calculate the number of protons from the following information:
Atomic Mass: 14.01
Atomic Number: 7
Mass Number: 13
6
7
13
14
Who was the first person to use the word "atom" to describe a tiny piece of matter than cannot be divided?
Democritus
Bohr
Rutherford
Thomson
During the Rutherford's experiment, why did many of the alpha particles go straight through the gold foil?
They hit the positively charged nucleus and stuck.
They went straight through because the atom was mostly empty space.
They didn't hit any subatomic particles because there are none.
They weren't affected by the negative charges.
Calculate the mass number using the following information:
Protons: 10
Neutrons: 8
Electrons: 11
10 amu
18 amu
19 amu
21 amu
Which of the following is the correct way to write the element based off this information:
Protons: 4
Neutrons: 3
Electrons: 4
beryllium - 7
beryllium - 8
lithium - 7
lithium - 8
If an electron is at a HIGH energy level, which of the following is true?
The electron will emit light as energy is released.
The electron is close to the nucleus.
The electron is stable.
The electron needs to absorb energy to become stable.
What is the charge of a neutron?
-1
0
1
What is the relative mass of an electron?
0 amu
1 amu
-1 amu
What color are the protons in this picture of an atom?
yellow
green
red
they are not shown
What color are the electrons in this picture of an atom?
yellow
green
red
they are not shown
Where are the neutrons located in an atom?
inside the nucleus
outside the nucleus
the electron cloud
they are not found in an atom
Which experiment did JJ Thomson do?
Gold Foil
Cathode Ray Tube
Which of the following correctly describes isotopes of the same element?
same neutrons, different electrons
same neutrons, different protons
same protons, different electrons
same protons, different neutrons
Which subatomic particles contribute to the mass number of an atom?
protons and neutrons
protons and electrons
neutrons and electrons
protons, neutrons, and electrons
Why were neutrons the last subatomic particle to be discovered?
They have the greatest mass.
They have the smallest mass.
They have a positive charge.
They do not carry a charge.
What did Rutherford observe in his gold foil experiment that led him to conclude there was a positively charged center?
All of the positive alpha particles traveling straight through the gold foil.
Some of the positive alpha particles traveling straight through the gold foil.
All of the positive alpha particles deflecting off the gold foil.
Some of the positive alpha particles deflecting off the gold foil.
What is the picture showing?
an electron going from a ground to excited state
an electron going from an excited to ground state
an proton going from a ground to excited state
an proton going from a ground to excited state
Atomic Number: 5
Neutrons: 6
Electrons: 5
Mass Number: ?
5 amu
6 amu
10 amu
11 amu
Which of the following is the correct way to write the element based off this information:
Protons: 8
Neutrons: 9
Electrons: 8
