Science qz 335-342

Question 1

describes electrons that are part of more than one chemical bond, being shared by more than two atoms

Answer 1

delocalized

Question 2

the property of an element that describes how strongly atoms of that element pull on electrons in chemical bonds

Answer 2

electronegativity

Question 3

a covalent bond in which both atoms share their electrons equally and the electrons are not pulled closer to one atom than to the other

Answer 3

nonpolar bond

Question 4

a covalent bond in which the more electronegative atom pulls the shared electrons toward itself

Answer 4

polar bond

Question 5

a charge less than that of a proton or electron

Answer 5

partial charge

Question 6

a molecule that has opposite partial charges on opposite ends of the molecule

Answer 6

polar molecule

Question 7

a substance consisting of atoms covalently bonded into a large structure that does not contain a specific number of atoms

Answer 7

covalent network

Question 8

the simplest ratio of atoms in a covalent network

Answer 8

formula unit

Question 9

the mass of a formula unit

Answer 9

formula mass

Question 10

negative ion

Answer 10

anion

Question 11

positive ion

Answer 11

cation

Question 12

a bond formed by the attraction between the oppositely charged ions

Answer 12

ionic bond

Question 13

-covalent bonding is associated with the term __1__
-ionic bonding is associated with __2__

Answer 13

1. sharing electrons
2. transferring electrons

Question 14

an ion formed from a group of atoms

Answer 14

polyatomic ion

Question 15

an orderly geometric arrangement consisting of millions or billions of ions all bonded by electrical attraction

Answer 15

ionic crystal

Question 16

the bonding in metals in which valence electrons are shared by all the atoms in the metal

Answer 16

metallic bonding

Question 17

______ follow these rules:
1. the name of the last element is changed to end in -ide
2. prefixes are added to each element indicating how many atoms are present

Answer 17

covalent bonds

Question 18

_____ follow these rules:
1. list the names of the ions with the cation listed first
2. the charges of the ions in an ionic compound must add to zero
3. when an element can form more than one monatomic cation, the charge of the ion is included as a Roman numeral

Answer 18

ionic bonds

Question 19

combinations of chemical symbols and numbers showing the type and number of atoms in each compound

Answer 19

chemical formulas

Question 20

tells how many of each type of atom are in a molecule

Answer 20

molecular formula

Question 21

shows the general arrangement of the atoms in a molecule

Answer 21

structural formula

Question 22

shows only the simplest ratio of atoms in a compound

Answer 22

empirical formula

Question 23

For a nonmolecular compound, the empirical formula is the same as the _________

Answer 23

formula unit