Atomic Structure

The scientist who discovered the nucleus

• Democritus

• Thomson

• Rutherford

• Dalton

Tags

NGSS.HS-PS1-8

The group of elements that tend to gain electrons

• Non-Metals

• Metals

• Hydrogen

• Carbon

Protons, neutrons, and electrons are called ___.

• atoms

• particles

• sub-atomic particles

• elements

An atom or group of atoms with a positive or negative charge

• neutral atom

• Isotopes

• Ions

The atomic number represents how many ___ there are

• atoms

• protons

• neutrons

• electrons

The ___ is the number of protons and neutrons added together in an atom

• atomic mass

• number of electrons

• mass number

• number of neutrons

The name of the experiment used to discover the nucleus.

• cathode ray tube

• gold foil experiment

Electrons that are lost create this.

• ions

• cations

• anions

• neutral atoms

The scientist who discovered the neutron.

• Rutherford

• Thomson

• Chadwick

• Bohr

Atoms of the same element that have different numbers of neutrons.

• neutral atoms

• ions

• isotopes

• cations