Milady's Review - Basics Of Chemistry & Electricity

Front 1

1. Organic chemistry is the study of substances containing:

Back 1

a) carbon

Front 2

2. Examples of organic substances include:

Back 2

a) pesticides

Front 3

3. Matter is any substance that:

Back 3

a) occupies space

Front 4

4. The particles from which all matter is composed are:

Back 4

c) atoms

Front 5

5. Two or more atoms of the same element that are united chemically form a/an:

Back 5

a) elemental molecule

Front 6

6. When water boils, it is changing from one state of matter to another, from:

Back 6

a) liquid to gas

Front 7

7. When a physical change occurs in a substance, there is:

Back 7

a) a change in physical properites

Front 8

8. The action of permanent haircolour is an example of a:

Back 8

c) chemical change

Front 9

9. Water (H20) is an example of a/an:

Back 9

a) chemical compound

Front 10

10. Salt water and fruit salad are examples of a/an:

Back 10

b) physical mixture

Front 11

11. A blended mixture of two or more solids, liquids, or gases is a/an:

Back 11

a) solution

Front 12

12. Liquids that can be mixed together in any proportion without separating are:

Back 12

d) miscible

Front 13

13. A substance that dissolves another substance to form a solution, with no change in chemical composition, is a/an:

Back 13

b) solvent

Front 14

14. A mixture that must be shaken or mixed well before using is a/an:

Back 14

a) suspension

Front 15

15. Most of the emulsions used in a salon:

Back 15

d) are oil-in-water emulsions

Front 16

16. Emulsions are mixtures of two or more:

Back 16

c) immiscible substance.

Front 17

17. The head of a surfactant molecule is water-loving, or:

Back 17

b) hydrophilic

Front 18

18. Substances that are often used instead of ammonia in hair products because their odour is not as strong are:

Back 18

c) alkanolamines

Front 19

19. A colourless gas with a strong odour, composed of hydrogen and nitrogen, is:

Back 19

c) ammonia

Front 20

20. In pure water, some of the molecules naturally ionize into hydrogen ions and:

Back 20

c) hydroxide ions

Front 21

21. pH is only possible because of the ionization of:

Back 21

b) water

Front 22

22. The pH scale measures:

Back 22

a) acidity and alkalinity

Front 23

23. Solutions with a pH below 7.0 are:

Back 23

d) acidic

Front 24

24. Alkalis have a pH above 7.0 and:

Back 24

c) soften and swell the hair

Front 25

25. The average pH of hair and skin is:

Back 25

b) five

Front 26

26. When a substance is combined with oxygen, the process is called:

Back 26

a) oxidation

Front 27

27: The chemical reaction in which hydrogen is added to a substance is:

Back 27

c) reduction

Front 28

28. A substance that readily transmits electricity is a/an:

Back 28

d) conductor

Front 29

29. Rubber and silk are good:

Back 29

a) insulators

Front 30

30. A constant electrical current travelling in one direction only is called a/an:

Back 30

b) direct current

Front 31

31. A unit of electrical pressure is referred to as a/an:

Back 31

a) volt

Front 32

32. An ampere (amp) is a unit of electrical:

Back 32

a) strength

Front 33

33. The amount of electrical energy that is being used in one second is measured in:

Back 33

a) watts

Front 34

34. A device that automatically interrupts or shuts off an electric circuit in the event of overload is the:

Back 34

c) circuit breaker

Front 35

35. Electronic facial treatments are known as:

Back 35

a) electrotherapy

Front 36

36. The positive electrode of an electrotherapy device is called a/an:

Back 36

b) anode

Front 37

37. In electotheraphy, the cathode is:

Back 37

b) the negative electrode

Front 38

38. A constant and direct current used to produce chemical effects on the tissues and fluids of the body is the:

Back 38

c) galvanic current

Front 39

39. An alternating and interrupted current used to cause muscular contractions is the:

Back 39

c) faradic current

Front 40

40. An electrical current used for its heat-producing effects is the:

Back 40

d) high-frequency current

Front 41

41. The anode (positive electrode) of a galvanic device:

Back 41

c) contracts blood vessels

Front 42

42. The cathode (negative electrode) of a galvanic device:

Back 42

c) stimulates the nerves

Front 43

43. The process of softening and emulsifying oil deposits and blackheads in the follicles is:

Back 43

c) desincrustation

Front 44

44. Visible light makes up __% of natural sunlight.

Back 44

c) 35

Front 45

45. Ultraviolet (UV) rays, also called cold rays or actinic rays, have short wavelengths and:

Back 45

a) are the least penetrating rays

Front 46

46. The invisible rays that produce the most heat are the:

Back 46

b) infrared rays

Front 47

47. It is estimated that __ Americans will develop skin cancer.

Back 47

a) 1 in 5

Front 48

48. "Combination light" is also known as:

Back 48

a) white light

Front 49

49. The average distance you should place an infrared lamp from the skin is about:

Back 49

c) 30"

Front 50

50. A safety precaution you should always follow with electrical equipment is to:

Back 50

b) use only one plug per outlet