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WorksheetsUnit 3 Lesson 1: The Atom
Total questions: 10
Worksheet time: 5mins
Name
Class
Date
1.
Screen 4
Who is Niels Bohr?
Who is Niels Bohr?
a)
A scientist who discovered gravity.
b)
A scientist who discovered electricity
c)
A scientist who came of with the atom model similar to today.
d)
A scientist who discovered force and motion laws.
2.
Screen 5
What subatomic particle in an atom has a negative charge?
What subatomic particle in an atom has a negative charge?
a)
proton
b)
neutron
c)
electron
d)
nucleus
3.
Screen 6
What is the difference between atomic number and mass number?
What is the difference between atomic number and mass number?
a)
Atomic number is the electrons and mass is neutrons.
b)
Atomic number is the number of protons and the atomic mass is the number of protons plus neutrons.
c)
Atomic number is the number of neutrons and the atomic mass is the number of electrons.
d)
Atomic number is the number of protons and the atomic mass is the number of electrons.
4.
Screen 6
Which part of an atom is mostly empty space?
Which part of an atom is mostly empty space?
a)
Electron clouds are made up of mostly empty space
b)
The nucleus is made of mostly empty space.
c)
Each proton is made of mostly empty space.
d)
Neutrons are mostly made of empty space.
5.
Screen 7
Which subatomic particles in an atom have opposite charges?
Which subatomic particles in an atom have opposite charges?
a)
An electron has a positive charge and neutron has a negative charge.
b)
An electron has a negative charge and a proton has a positive charge.
c)
An electron has a positve charge and a proton has a negative charge.
d)
A neutron has a negative charge and a proton has a positive charge.
6.
Screen 8
What does the electron cloud in an atomic model represent?
What does the electron cloud in an atomic model represent?
a)
Most likely places within the atom that neutrons are found.
b)
Most likely place where protons are found.
c)
Most likely places within the atom that the electrons are going to be found.
d)
Most likely places with the atom that the neutrons and protons are to be found.
7.
Screen 9 What would be the atomic number of an atom with 11 protons and 12 neutrons?
a)
an atomic number of 23.
b)
an atomic number of 12
c)
an atomic number of `3
d)
an atomic number of 11.
8.
Scree 9 What would be the atomic number of an atom with 11 protons and 12 neutrons?
a)
an atomic number of 23.
b)
an atomic number of 12
c)
an atomic number of `3
d)
an atomic number of 11.
9.
Screen 10 What are the three subatomic particles that we've talked about in this lesson that make up an atom?
a)
protons and neutrons
b)
neutrons and electrons and nucleus
c)
protons and electrons
d)
protons, neutrons and electrons
10.
Screen 10 Which particles determine the atomic number of an atom? Which particles determines the atom's mass number?
a)
The atomic number is the number of protons. The atomic mass is protons plus neutrons.
b)
The atomic number is the number of electrons. The atomic mass is the electrons and neutrons.
c)
The atomic number is the number of neutrons. The atomic mass is protons and electrons.
d)
The atomic number is the number of electrons. The atomic mass is neutrons and protons.
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