WorksheetsAtoms
Total questions: 26
Worksheet time: 9mins
How many electrons can the third energy level hold?
32 electrons
18 electrons
2 electrons
8 electrons
Name the subatomic particle with a positive charge.
neutron
electron
proton
What is the charge of a neutron?
neutral
negative
positive
This subatomic particle has a negative charge.
electron
proton
neutron
How many electrons can the second energy level hold?
8 electrons
2 electrons
32 electrons
18 electrons
Where are valence electrons found?
Inside the nucleus
The first energy level of an atom
The last energy level of an atom
How do you find the number of neutrons?
Look at the atomic number
Look at the atomic mass
Atomic mass - atomic number
Protons + electrons
The atoms in a row of the periodic table all have the same number of energy levels.
True
False
How many electrons can the fourth energy level hold?
2 electrons
8 electrons
32 electrons
18 electrons
Which subatomic particle does not contribute to an atom's mass?
protons
electrons
neutrons
Why will electrons in the same energy level never run into each other?
One is negative and one is positive
Both are negative and repel each other
They have no charge
How many electrons can the first energy level hold?
8 electrons
2 electrons
18 electrons
32 electrons
What does the atomic number tell you about an atom?
The number of neutrons
The number of valence electrons
The number of protons and electrons
Fluoride's atomic number is 9 and atomic mass is 19.00. How many neutrons does Flouride have?
9 neutrons
10 neutrons
19 neutrons
Which subatomic particles are located in the nucleus?
Protons and electrons
Protons and neutrons
Only protons
Only neutrons
What are valence electrons involved in?
They bond with other atoms
Nothing
Keeping the atom together
Why was the plastic attracted to your skin?
The plastic became neutral.
Electrons transferred to the plastic making it more negatively charged.
The plastic became more positive.
How do you determine how many valence electrons an atom has?
Look at the atomic number
Look at what column it is in
Atomic mass- atomic number
What does the atomic mass number tell you about an atom?
Total number of protons and neutrons
Total number of protons, neutrons, and electrons
Total number of neutrons and electrons
Total number of protons and electrons
Sodium's atomic number is 11. What do you know about this atom?
The number of neutrons
The number of neutrons and electrons
The number of protons and electrons
How heavy it is
Carbon has 6 protons and 6 electrons. The electrons fill the energy levels in carbon like this
2 in the first, 2 in the second, and 2 in the third
2 in the first and 4 in the second
1 in the first and 5 in the second
4 in the first and 2 in the second
Where are electrons found in an atom?
Outside the nucleus
The nucleus
Energy levels around the nucleus
Next to the neutrons of the atom
Hydrogen atoms have 1 proton and 1 electron. The proton and electron stay near each other because
Positive and negative charges repel
Positive and positive charges repel
Positive and negative charges attract
Two negatives make a positive
Helium has 2 protons, 2 electrons, and 2 neutrons. Which of these determine Helium's identity?
The protons
The neutrons and electrons
The electrons
The protons and electrons
Electrons are in regions around the nucleus called energy levels. The first energy level
Is the furthest from the nucleus
Holds the most electrons
Is closest to the nucleus
Holds more than 2 electrons
An electron is in a region outside the nucleus. An electron
Is larger than a proton and has no charge
Has less mass than a proton and has a negative charge
Is smaller than a proton and has no charge
Has a positive charge
