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WorksheetsThe Atom
Total questions: 20
Worksheet time: 12mins
A particle that moves around the nucleus of an atom is an _______.
Proton
Neutron
Electron
Quark
Particles in an atom that are neutral which means they have no charge are _____.
negatrons
electrons
neutrons
protons
The positive particles of an atom are called _____.
electrons
positrons
neutrons
protons
All matter is made of ______.
energy
atoms
electrons
compounds
An atom has an atomic number of 15 and a mass number that rounds to 31. How many protons are there in the atom?
15
31
16
47
Which colored particle is the electron?
blue
red
yellow
red and yellow
Use the picture to answer. What is the atomic mass of gold?
79
196.967
197
118
How can we tell that this is a Beryllium atom?
It has four protons.
It has two sets of electrons.
The atomic mass rounds to 11.
It has five neutrons.
How many protons does an atom of Sodium (Na) have?
12
11
23
If an atom's atomic number is 2 and has a mass of 4, how many neutrons does the atom have?
2
4
6
0
What is the chemical symbol for Carbon?
C
Cb
6
12
