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This set of MCQs helps you brush up on important chemistry topics and prepare you to dive into skill practice.
Subatomic particles with a negative charge.
Neutrons
Protons
Quarks
Electrons
In Thomson's plum pudding model, the plums represent :
Neutrons
Protons
Electrons
Nucleus
Who discovered the electron?
Bohr
J.J. Thomson
Dalton
Rutherford
Which subatomic particle determines the identity of an element?
Neutrons
Protons
Electrons
None of these
In Dalton's Atomic Theory, all elements consist of __________ that cannot be divided.
Atoms
Hydrogen
Parts
Molecules
A fluorine atom has 9 electrons - 7 in its outer shell and 2 in its inner shell. How many electrons would be in the outer shell if it were to become a fluoride ion?
3
4
7
8
The two main parts of an atom are:
Neutrons and electron energy level
Neutrons and protons
Electrons and protons
Neutrons and Nucleus
The atomic number of an element tells us,
The number of electrons orbiting the nucleus
The number of protons orbiting the nucleus
The number of neutrons in the nucleus
The number of electrons in the nucleus
