atomic structure

Front

Which particle contributes the negative charge to the atom? Options: proton, electron, neutron, nucleus

Back

electron

Front

Which particle does not contribute mass to the atom?

Back

Electron

Front

What scientist is best known for his gold foil experiment?

Back

Ernest Rutherford

Front

Who is the first scientist to think that the atom was the smallest unit of matter? Options: J.J. Tomson, Ernest Rutherford, John Dalton, Democritus

Back

Democritus

Front

What scientist first developed 5 rules for atomic theory, and helped kick start modern chemistry? Options: J.J. Tomson, Ernest Rutherford, John Dalton, Democritus

Back

John Dalton

Front

What element is this an atom of? Options: nitrogen, lithium, beryllium, carbon

Back

lithium

Front

The three main subatomic particles are electrons, protons and ____________.

Back

neutrons

Front

What are the two main parts of the atom?

Back

nucleus and electron cloud

Front

What is the standard unit of mass at the atomic level?

Back

amu

Front

Most of the mass in an atom is made up of?

Back

protons and neutrons