Front

J.J. Thomson provided evidence that an atom...

Back

contains negatively charged particles

Front

Rutherford discovered the...

Back

nucleus

Front

Isotopes are elements with a different amount of: protons, neutrons, electrons, atoms

Back

neutrons

Front

Which particle does not contribute mass to the atom?

Back

Electron

Front

An element will always have the same number of:

Back

protons

Front

An ______________ is the same element, with the same number of protons, but different numbers of neutrons.

Back

Isotope

Front

The smallest particle into which an element can be divided and still be the same substance

Back

atom

Front

What scientist first developed 4 rules for atomic theory, and helped kick start modern chemistry? Options: J.J. Thomson, Ernest Rutherford, John Dalton, Democritus

Back

John Dalton

Front

Niels Bohr suggested that electrons...

Back

are found in specific orbits

Front

In a correctly written symbol, what is located in the 'A' position?

Back

mass number