WorksheetsAtomic Theory (Beginning)
Total questions: 15
Worksheet time: 24mins
Which subatomic particles has a negative charge?
Electrons
Neutrons
Protons
Quarks
Who stated that atoms cannot be divided?
Democritus
Dalton
Thomson
Bohr
Which subatomic particle has a positive charge?
neutrons
atomic mass
protons
isotopes
Which subatomic particle has a neutral charge?
Neutrons
Protons
Nucleus
Electrons
These particles are found in the nucleus
protons and electrons
nucleus and neutrons
protons and neutrons
electrons and neutrons
Which element has 33 protons?
Arsenic (As)
Sulfure (S)
Chlorine (Cl)
Bromine (Br)
How many protons does francium (Fr) contain?
114
87
223
136
Where is the majority of an atoms mass located?
Inside the nucleus because electrons and protons.
Outside the nucleus because of electrons.
Inside the nucleus because of protons and neutrons.
Outside the nucleus because of electrons and protons.
Which subatomic particle identifies an element?
neutron
electron
proton
nucleus
Atomic number = ________________
neutrons
protons
nucleus
