Chemistry Unit 0 & 1

The electrons that are on the outer most region of the atom

• Shell Electrons
• Violent Electrons
• Valence Electrons

This unit is represented by the combined number of protons and neutrons

• Atomic Mass
• Atomic Number
• Mass Number

This number is represented by the number of protons in the atom

• Atomic Mass
• Atomic Number
• Mass Number

If an atom has 12 positively charged subatomic particles, which of the following must it also have to be considered a neutral atom?

• 12 neutrons
• 12 electrons
• 12 protons
• 24 protons and neutrons

Electrons orbit a certain distance from the nucleus. Either radiate or absorb energy when jumping orbitals.

• Dalton

• Thomson

• Rutherford

• Bohr

The atom is mostly large empty space with a small, dense nucleus at the center

• Dalton

• Thomson

• Rutherford

• Bohr

Atom is a positively charged cloud with embedded negative electrons

• Dalton

• Thomson

• Rutherford

• Bohr

Atoms are indivisible (cannot be broken down)

• Dalton

• Thomson

• Rutherford

• Bohr

What scientist proposed this atomic model?

• Dalton

• Thomson

• Rutherford

• Bohr

What scientist proposed this atomic model?

• Dalton

• Thomson

• Rutherford

• Bohr