Chapter 20 Vocab Cards

Question 1

binary compound pg. 615

Answer 1

A compound that is composed of two elements.

Question 2

chemical bond pg. 606

Answer 2

The force that holds atoms together in a compound.

Question 3

chemical formula pg. 603

Answer 3

A(n) … tells what elements a compound contains and the exact number of the atoms of each element in a unit of that compound.

Question 4

covalent bond pg. 611

Answer 4

The attraction that forms between atoms when they share electrons.

Question 5

hydrate pg. 620

Answer 5

A compound that has water chemically attached to its ions and written into its chemical formula.

Question 6

ion pg. 608

Answer 6

A(n) … is a charged particle because it has either more or fewer electrons than protons.

Question 7

ionic bond pg. 610

Answer 7

The force of attraction between the opposite charges of the ions in an ionic compound.

Question 8

molecule pg. 611

Answer 8

A neutral particle that forms as a result of electron sharing.

Question 9

nonpolar molecule pg. 614

Answer 9

A molecule in which electrons are shared equally in bonds.

Question 10

oxidation number pg. 615

Answer 10

A(n) … tells you how many electrons an atom has gained, lost, or shared to become stable.

Question 11

polar molecule pg. 614

Answer 11

A molecule that has a slightly positive end and a slightly negative end although the overall molecule is neutral.

Question 12

polyatomic ion pg. 619

Answer 12

A positively or negatively charged, covalently bonded group of atoms.