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WorksheetsAtomic Theory, Structure, and Periodic Squares
Total questions: 35
Worksheet time: 34mins
Who proposed the plum pudding model of the atom?
Ernest Rutherford
J.J. Thomson
Niels Bohr
Max Planck
What is the charge of a proton?
+2
+1
-1
0
Which subatomic particle has a negative charge?
electron
positron
neutron
proton
What is the atomic number of an element?
The atomic number of an element is the number of neutrons in the nucleus of an atom.
The atomic number of an element is the number of electrons in the nucleus of an atom.
The atomic number of an element is the number of protons in the nucleus of an atom.
The atomic number of an element is the number of protons and neutrons in the nucleus of an atom.
What is the atomic number of an element?
The atomic number of an element is the number of neutrons in the nucleus of an atom.
The atomic number of an element is the number of electrons in the nucleus of an atom.
The atomic number of an element is the number of protons in the nucleus of an atom.
The atomic number of an element is the number of protons and neutrons in the nucleus of an atom.
Who discovered the neutron?
James Chadwick
Isaac Newton
Albert Einstein
Marie Curie
What is the mass of an electron?
1 kg
0.0001 kg
10^-10 kg
9.10938356 × 10^-31 kg
What is the charge of a neutron?
-1
0
1
2
What is the Bohr model of the atom?
A model that describes the movement of protons and neutrons within an atom.
A simplified representation of an atom where electrons orbit the nucleus in specific energy levels or shells.
A model that explains the behavior of electrons in terms of wave-particle duality.
A model that suggests that electrons are stationary and do not move around the nucleus.
What subatomic particle determines the name of the element?
Electron
Proton
Neutron
Boson
How can you determine the number of neutrons in an atom if you know its atomic number and mass number?
Subtract the atomic number from the mass number
Add the atomic number to the mass number
Multiply the atomic number by the mass number
Divide the mass number by the atomic number
What is the central part of an atom called?
Electron
Nucleus
Proton
Neutron
What is the atomic number of an element with 11 protons?
11
12
22
23
What is the mass number of an atom with 6 protons and 8 neutrons?
6
8
14
12
Which subatomic particle is responsible for the identity of an element?
Proton
Electron
Neutron
Photon
What is the significance of the atomic number in the periodic table?
It shows the total number of electrons and protons.
It is used to calculate the atomic mass.
It indicates the number of protons in an atom.
It represents the number of neutrons in an atom.
Which model belongs to Rutherford?
Which model belongs to Bohr?
Which is the model created by Dalton?
Boron has an atomic number of 5. How many protons does he have?
3
2
4
5
Chlorine has an atomic number of 17 and a total of 20 neutrons. The mass number is ...
17
37
20
35
How do you calculate the mass number?
number of protons + electrons
number of protons + neutrons
number of electrons + neutrons
It's the decimal number from the periodic table.
What does 1.00794 represent?
Hydrogen
Atomic number
Atomic mass
Atomic explosion
How many protons does a neon atom have?
7
8
9
10
Which two particles are found in the nucleus of the atom?
Protons and Electrons
Protons and Neutrons
Electrons and Neutrons
Positrons and Neutrons
What is an Electron Cloud?
The mist outside of an atom
The home of the protons
The location of electrons
The nucleus
What is the number of protons that the element in the image contains?
14
7
15
18
How many protons, electrons and neutrons does a neutral atom of Calcium have? Its atomic number is 20 and the mass number is 40.
20 protons, 18 electrons and 40 neutrons
20 protons, 20 electrons and 20 neutrons
40 protons, 40 electrons and 20 neutrons
20 protons, 18 electrons and 20 neutrons
The chemical symbol in this element box is
26
Fe
Iron
55.845
