Skin anatomy

Beauty and wellness professionals should study and have a thorough understanding of chemistry because

• clients often quiz beauty and wellness professionals on this important knowledge

• chemistry experiments are often regular practice at salons and spas

• it is unrelated to the safe operation of a salon or spa

• every product used in the esthetics industry contains some type of chemical

The effects of cosmetic and beauty products are based on how

• the body reacts to chemicals

• pleased the beauty professional is with the results

• favorably the new styles compare with the old

• friends and family members react to a new look

Creams, lotions, masks, and makeup

• only contain chemicals if they come from ingredients manufactured in a laboratory

• never contain chemiclas

• only contain chemicals if they are not made from natural sources such as plant extracts

• contain chemicals whether they come from natural sources or from ingredients manufactured in a laboratory

Which of the following is defined as any substance that occupies space and has weight?

• potentially dangerous

• a chemical

• matter

• a beauty product

Everything you can touch and everything you can see is matter except for which of the following?

• living and once-living bodies

• chemical and powders

• light and electricity

• liquids and gases

_____ is the simplest form of chemical matter

• an element

• a chemical

• a liquid

• a gas

There are _____ elements are known to science today

• 18

• 118

• 81

• 108

Of all the elements known to science today, ____ occur naturally on earth

• 19

• 89

• 18

• 98

Which of the following are defined as the basic units of matter

• protons

• electrons

• atoms

• neutrons

_____ is an example of a compound molecule

• the oxygen we breathe

• the ozone layer

• common table salt

• pure nitrogen