Chapter 7 Vocabulary

Question 1

Acid Mantle

Answer 1

protective barrier of lipids and secretions on the surface of the skin.

Question 2

Acid Alkali Neutralization reactions

Answer 2

When acid is mixed with an alkali in equal proportions to neutralize each other and form water and salt.

Question 3

Acids

Answer 3

substances that have a PH below 7.0, taste sour and turn litmus paper from blue to red.

Question 4

Air

Answer 4

Gaseous mixture that makes up the earths atmosphere. It is ordorless, colorless and generally consists of about 1 part oxygen and 4 parts nitrogen by volume.

Question 5

Alkalis

Answer 5

known as bases; compounds react with acids to form salts; have a PH above 7.0 taste bitter and turn litmus paper from red to blue.

Question 6

Anion

Answer 6

an ion with a negative electrical charge.

Question 7

Antioxidants

Answer 7

used to stabilize skin care products by preventing oxidation that would otherwise cause a product to turn rancid and decompose. They are vitamins such As A, C and E, which can be applied topically in products or taken internally to increase healthy bodily functions.

Question 8

Atoms

Answer 8

the smallest chemical components of an element that still retains the properties of that element.

Question 9

Cation

Answer 9

ion with a positive charge

Question 10

Chemical Change

Answer 10

Change in the chemical properties of a substance that is the result of a chemical reaction in which a new substance or substances are formed that have properties different from the original.

Question 11

Chemical Compounds

Answer 11

combinations of two or more atoms of different elements united chemically with a fixed chemical composition; define proportions and distinct properties.

Question 12

Chemical Properties

Answer 12

those characteristics that can only be determined by a chemical change in the identity of the substance.