Vocab Ch. 2 Sec. 1 & 2

Question 0

forms through the electrical force between oppositely charged ions.

Answer 0

Ionic bond

Question 1

The attraction among molecules of a substance.

Answer 1

Cohesion

Question 2

is an atom that has gained or lost one or more electrons.

Answer 2

Ion

Question 3

a substance made of atoms of different elements bonded together in a certain ratio.

Answer 3

Compound

Question 4

the substance that is present in the greater amount and that dissolves another substance.

Answer 4

Solvent

Question 5

an attraction between a slightly positive hydrogen atom and a slightly negative atom, often oxygen or nitrogen.

Answer 5

Hydrogen bond

Question 6

forms when atoms share a pair of electrons.

Answer 6

Covalent bond

Question 7

The attraction among molecules of different substances.

Answer 7

Adhesion

Question 8

the smallest basic unit of matter.

Answer 8

Atom

Question 9

a mixture of substances that is the same throughout—it is a homogeneous mixture.

Answer 9

Solution

Question 10

are compounds that remove H+ ions from a solution.

Answer 10

Base

Question 11

a compound that releases a proton—a hydrogen ion (H+)—when it dissolves in water.

Answer 11

Acid

Question 12

two or more atoms held together by covalent bonds.

Answer 12

Molecule

Question 13

a substance that dissolves in a solvent.

Answer 13

Solute

Question 14

A solution’s acidity, or H+ ion concentration, is measured by the pH scale.

Answer 14

pH

Question 15

it cannot be broken down into a simpler substance by ordinary chemical means.

Answer 15

Element