Chem Final Review 2

The Periodic Law states that there is periodic repetition of the physical and chemical properties of the elements:

• When they are arranged in order of increasing atomic radii

• Only when metals are considered

• When they are arranged in order of increasing atomic number

• When they are arranged in order of increasing atomic mass

The cathode ray tube experiment helped prove the existence of subatomic particles. Who was the scientist that conducted this experiment?

• John Dalton

• J.J. Thomson

• Ernest Rutherford

• Niels Bohr

A chlorine atom could be said to have:

• 10 core electrons and 6 valence electrons

• 10 core electrons and 7 valence electrons

• 12 core electrons and 5 valence electrons

• 12 core electrons and 6 valence electrons

In an ionic compound, positive and negative ions are packed into a regular repeating pattern called

• ionic compounds

• Lewis structure

• crystal lattice structure

• electron sea model

To attain a stable outer electron configuration, nonmetals ______ more electrons.

• share

• transfer

• lose

• gain

A positively charged ion is called a(n)

• cation

• anion

• molecule

• Atom

Which type of compound has delocalised electrons, meaning they float around freely?

• Metallic

• Ternary ionic

• Binary ionic

• Covalent

The electrostatic force that holds oppositely charged particles together in an ionic compound is referred to as a(n)

• metallic bond

• covalent bond

• ion-molecule bond

• ionic bond

The chemical name of Al₂O3 is

• Bialuminum trioxide

• Aluminum oxide

• Aluminum (II) oxide

• Aluminum (II) trioxide

How many valence electrons are shared in a double covalent bond?

• 2

• 4

• 8

• 10