Ch 7/8/9 Test

Question 0

Covalent bond

Answer 0

Two or more no metals share electrons

Question 1

Ionic bond

Answer 1

Metal transfers electrons to a nonmetal

Question 2

Valence Electron

Answer 2

Electron associated with an atom. Participating in a chemical bond

Question 3

Octet rule

Answer 3

Bond having 8 electrons in the valence shell

Question 4

Cation

Answer 4

Neutral atom looses electrons, giving it a net positive charge

Question 5

Anion

Answer 5

Atom that gains electrons with a net negative charge

Question 6

Nonpolar covalent

Answer 6

0-0.4 equal sharing

Question 7

Polar covalent

Answer 7

0.4-2.0 unequal sharing

Question 8

Ionic

Answer 8

> or = 2.0

Question 9

Polar

Answer 9

At least one negative & one positive are sticking out. “2 or more poles=polar”

Question 10

Coordination number

Answer 10

Number of ions of opposite charge the surround the ion in a crystal

Question 11

Metallic bonds

Answer 11

Forces of attraction between the free-floating valence electrons and the positively charged metal ions

Question 12

Ductile

Answer 12

Made into wire

Question 13

Malleable

Answer 13

Hammered into shapes

Question 14

Alloy

Answer 14

Mixtures of two or more elements, at least one metal. Properties often are superior to component element properties

Question 15

Diatomic molecule

Answer 15

Molecule that contains two atoms

Question 16

Molecular compound

Answer 16

Compound made of molecules.

i.e. H2O

Question 17

Polyatomic ion

Answer 17

Tightly bound group of atoms w/ a positive or negative charge and behaves as a unit.

Question 18

Molecular orbitals

Answer 18

Orbitals that apply to the entire molecule

Question 19

Sigma bond

Answer 19

When 2 atomic orbitals combine to form a molecular orbital that is symmetrical around the axis connecting 2 atomic nuclei

Question 20

Pi bond

Answer 20

Electrons are in sausage shape

Question 21

VSELR theory

Answer 21

Repulsion between electron pairs causes molecular shapes to adjust so that the valence electron pairs stay as far apart as possible

Question 22

Monatomic ions

Answer 22

Consist of a single atom