Font size
WorksheetsAtomic Structure Practice
Total questions: 11
Worksheet time: 8mins
Protons have a (a) charge.
Which particle is the smallest and has very little mass?
Protons
Neutrons
Electrons
In the diagram if the black circles represent protons, what do the white circles represent?
Protons
Neutrons
Electrons
The number of ____________________ distinguishes the atoms of one element from the atoms of another.
Protons
Neutrons
Electrons
The atomic number is the number of ____________ in the nucleus.
Protons
Neutrons
Electrons
The mass number is the total number of __________ and __________ in the nucleus.
Protons and Neutrons
Protons and Electrons
Neutrons and Electrons
How many electrons does Oxygen have?
16
8
15.99
O
What is the mass number of this atom?
1
3
4
7
What does the 1.0079 stand for?
atomic number
hydrogen
atomic mass
mass number
