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Flashcards in Shampoo And Chemistry Deck (67)
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The material the world is made of is what

Matter

1

What change refers to an alteration of the properties without the formation of any new substance. The action is reversed.

Physical

2

Elements and compounds are examples of what

Matter

3

Matter can be subdivided into elements and what

Atoms

4

The simplest form of matter is an what

Element

5

Each element consists of what

Individual atoms

6

When atoms of one element combine with atoms of another element they form a

Compound

7

Typical compounds are water, alcohol, ammonium thioglycolate and what

Hydrogen peroxide

8

The liquid that dissolves a compound is called a what

Solvent

9

A compound which is dissolved is known as what

Solute

10

The ability of a solvent to dissolve a compound, stems from a natural attraction between what

Molecules

11

Compounds that are insoluble in water can often be dissolved with what

Organic solvents

12

When oil and water are mixed together, the oil will form a what

Separate layer

13

The water molecules of an oil/water emulsion will also contain what

Dissolved chemicals

14

The percentage of oil droplets in an oil-in-water emulsion is usually about what

10%

15

Cleansing cream is an example of a what emulsion

Oil-in-water

16

Water-in-oil emulsions are made of water droplets scattered within a what

Oily base

17

Scientists, employing careful tests, have found the human hair and skin to be what

Mildly acid

18

Hydrogen peroxide solutions will maintain strength much better during storage when they packed in an what

Acid state

19

Unless hair removal is the objective of the treatment, alkaline products used on the hair must be what

Mild

20

When acids contact alkalies they form

Neutral solutions

21

When changes are to be made in the cortex of the hair, it is desirable that the product be what

Alkaline

22

If only the cuticle layer of the hair is to be treated, it is advisable that the product be

Acid

23

An organic acid that can safely be used on the hair is what

Citric acid

24

The PH range considered to be mildly acid would be

3 - 6.0

25

Most alkaline permanent waving solutions have a PH of what

Above 9.0

26

Strong to mild acids have a PH range of what

1.0 - 6.0

27

Solutions are considered to be mildly alkaline in the PH range of what

7.5 - 10

28

A substance is referred to as strong alkali when in the PH range of what

10.0 - 14.0

29

Porous hair that is to be chemically changes will usually require solutions which are what

Weaker