Review for Fourth Monthly Examination

Combination of two or more atoms that are chemically combined.

• Atom

• Compound

• Elements

• Mixture

The same number of electrons and protons, different number of neutrons.

• Isotopes

• Electron

• Ionization

• Proton

This has negative charges and it orbits around the nucleus.

• Proton

• Neutron

• Electron

• Nucleus

This is the process in which an atom loses, or gains electron.

• Isotopes

• Atomic Number

• Ionization

• Compound

He proposed that electrons move in different orbits, or energy levels, around the nucleus.

• John Dalton

• Robert Millikan

• Erwin Schrodinger

• Neils Bohr

He discovered that most atomic nuclei that contain a third type of subatomic particle.

• James Chadwick

• J.J Thompson

• Ernest Rutherford

• John Dalton

He proved that electrons have elementary charges.

• J.J Thompson

• Ernest Rutherford

• Robert Millikan

• William Crookes

 ________ is anything that has mass and occupies space.

When any kind of gas such, as nitrogen or carbon dioxide, is heated it _________.

• Expands

• Decreases

• Losses

The force of attraction is greatest between the particles of ______.

• Solid

• Liquid

• Gas