Atomic Theory Review

Match it! Select the correct answer from the pull down...Good luck!

Protons have a charge of

Neutrons have a charge of

Isotopes are atoms of the same element that have different number of ____________

Atoms of different elements can never have the same number of __________ in the nucleus

The number of neutrons is equal to the ____________________

The mass number of an atom is equal to the number of ____________ in the atom.

____________ experiments provided the first evidence that atoms are made of smaller particles, called subatomic particles.

What experiment did Ernest Rutherford complete?