Infection Control
Hair Structure
Chemistry


Skin









Chemistry (41–60)





What scale measures acidity and alkalinity?
Answer: pH scale
What number is neutral on the pH scale?
Answer: 7
What is a substance with a pH below 7 called?
Answer: Acid
What is a substance wi
Nails & Services
100

What level of decontamination kills most bacteria, viruses, and fungi?

Disinfection

100

What is the outer layer of hair?

Cuticle

100

What scale measures acidity and alkalinity?

pH scale

100

What is the outer layer of skin?

Epidermis

100

What is the visible part of the nail called?

Nail plate

200

What organization regulates workplace safety?

OSHA

200

What layer gives hair strength and elasticity?

Cortex

200

What is a substance with a pH below 7 called?

Acid

200

What is the middle layer of skin?

Dermis

200

What is the living skin at the base of the nail called?

Matrix

300

What is the lowest level of decontamination?

Sanitation

300

What gives hair its natural color?

Melanin

300

What is a substance with a pH above 7 called?

Alkaline

300

What is the deepest skin layer?

Subcutaneous layer

300

What is the skin under the nail plate called?

Nail bed

400

What must you do before and after every client?

Wash or sanitize hands

400

What determines how hair absorbs moisture?

Porosity

400

What bond is easily broken by water or heat?

Hydrogen bond

400

What is a small raised bump on skin?

Papule

400

What is the pale half-moon at the base of the nail?

Lunula

500

What type of disinfectant is required for salon tools?

EPA-registered disinfectant

500

What is the growth stage of hair?

Anagen

500

What bond is broken during chemical services like perms and relaxers?

 Disulfide bond

500

What is a thick scar called?

Keloid

500

What test checks for allergic reactions to hair color?

Patch test