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WorksheetsAtom Structure
Total questions: 10
Worksheet time: 5mins
What is the smallest unit of an atom?
molecule
proton
neutron
electron
What is the nucleus of an atom made up of?
Protons and electrons
Protons and neutrons
Neutrons and electrons
Electrons and protons
What is the charge of a proton?
Negative
Zero
Positive
Neutral
What is the charge of a neutron?
Charged
Negative
Neutral
Positive
Which subatomic particle is located in the nucleus of an atom?
proton
neutron
electron
photon
What is the atomic number of an element?
The atomic number of an element is the number of isotopes it has.
The atomic number of an element is the number of protons in its nucleus.
The atomic number of an element is the number of neutrons in its nucleus.
The atomic number of an element is the number of electrons in its nucleus.
What is the mass number of an element?
Total number of electrons
Total number of protons + total number of neutrons
Total number of protons
Total number of isotopes
How many electrons can the first energy level of an atom hold?
8
6
4
2
What is the maximum number of electrons that can occupy the second energy level?
4
8
6
10
What is the relationship between the atomic number and the number of protons in an atom?
The atomic number is always higher
They are different
The number of protons is always even
They are the same
