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WorksheetsAtomic basics and atomic history
Total questions: 25
Worksheet time: 16mins
Name
Class
Date
1.
Value representing the number of protons in an element
a)
Atomic Mass
b)
Mass Number
c)
Valence Electrons
d)
Atomic Number
2.
Atoms of the same element with a different number of neutrons
a)
Ion
b)
Gluons
c)
Isotope
d)
Quarks
3.
A charged atom
a)
Ion
b)
Isotope
c)
Electron Cloud
d)
Quark
4.
The smallest particle of an element that shows all the properties of that element.
a)
Subatomic Particles
b)
Atom
c)
Quarks
d)
Gluons
5.
Where electrons are likely to be found as they travel around the nucleus
a)
Nucleus
b)
Electron Cloud
c)
Within a Proton
d)
Within a Neutron
6.
Discovered the nucleus of the atom through the Gold Foil Experiment
a)
Rutherford
b)
Chadwick
c)
Thomson
d)
Dalton
7.
Discovered the electron within the atom
a)
Thomson
b)
Chadwick
c)
Schrodinger & Heisenberg
d)
Dalton
8.
Created the Planetary Model of the atom
a)
Bohr
b)
Dalton
c)
Rutherford
d)
Chadwick
9.
Believed that atoms of the same element are identical to each other
a)
Bohr
b)
Rutherford
c)
Dalton
d)
Thomson
10.
Whose model suggested that negative particles were mixed in with positively charged material - like seeds in a watermelon?
a)
J.J. Thomson
b)
Ernest Rutherford
c)
Niels Bohr
d)
Albert Einstein
11.
What can you conclude from the fact that scientists continue to update the atomic model?
a)
New information about atoms continues to be discovered
b)
Old information about atoms is completely useless
c)
Scientists did not have any information about atoms until a few years ago
d)
Scientists still have no idea what atoms look like
12.
Which scientists believed an atom was indivisible? (Choose all correct responses.)
a)
Democritus
b)
Bohr
c)
Thomson
d)
Rutherford
13.
Which scientist was the first person responsible for proposing the idea of atoms?
a)
Democritus
b)
John Dalton
c)
Ernest Rutherford
d)
J.J. Thomson
e)
Niels Bohr
14.
Describe an Electron Cloud?
a)
the mist outside of an atom
b)
home of the protons
c)
where electrons are located
d)
nucleus
15.
Which particles make up the nucleus of an atom?
a)
protons and neutrons
b)
electrons and protons
c)
electrons, protons, and neutrons
d)
electrons and neutrons
16.
What is the mass number and name of an element with 8 protons and 8 neutrons?
a)
16 - Carbon
b)
16 - Oxygen
c)
24 - Oxygen
d)
8 - Neon
17.
An element with a mass number of 10 and an atomic number of 6 has how many protons?
a)
5
b)
8
c)
6
d)
10
18.
What is the atomic mass of the atom pictured?
a)
11
b)
12
c)
22
d)
23
19.
Which of the following people said the atom was a solid sphere?
a)
Dalton
b)
Thompson
c)
Rutherford
d)
Bohr
20.
Which of the following is a substance that can not be broken down into a simpler substance?
a)
Isotope
b)
Element
c)
Compound
d)
Atomic Number
21.
Oxygen’s atomic number is 8. This means that an oxygen atom must have
a)
8 electrons
b)
8 protons
c)
8 neutrons
d)
a mass number of 8
22.
In an atom, what is the number of protons equal to?
a)
The number of electrons.
b)
The number of neutrons.
c)
The number of molecules.
d)
The number of nuclei.
23.
The particles with no charge in an atom are the _______.
a)
electrons
b)
neutrons
c)
protons
d)
protons and neutrons
24.
Most of the atom is filled with
a)
electrons
b)
empty space
c)
the nucleus
d)
protons
25.
How did each model of the atom help to develop the atomic theory?
a)
Each model provided opinions that were added.
b)
Each model showed different properties of the same structure.
c)
Each model showed new particles that had been discovered.
d)
Each model built upon the other to show new particles or properties of previously discovered particles.
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