102.11-102.15

Water freezing anf becoming ice is which type of change?

• chemical

• physical

• elemental

• molecular

Distilled water with a pH of 7 is considered:

• acidic

• alkaline

• neutral

• pH balanced

Hard water has minerals that:

• prevent shampoo from lathering

• make hair soft

• create an elemental change

• make shampoo lather excessively

Which term means liquids that will not mix?

• solvent

• solution

• miscible

• immiscible

Hair grows from a tube-like pocket known as the follicle or:

• bulb

• root sheath

• papilla

• arrector pili

The acid mantle maintains the natural pH of hair & skin and protects the:

• cortex

• cuticle

• medulla

• papilla

When amino acids join together in polypeptide chains, what is created?

• elements

• chemicals

• compounds

• proteins

A pH of 7 is how many times more acidic than a pH of 9?

• 10000

• 1000

• 100

• 10

When the two hydrogen atoms join with one oxygen to form a water molecule, the result is a(n):

• atom

• mixture

• element

• compound

The primary ingredient of most shampoos is:

• minerals

• conditioners

• dimethicones

• deionized water