Lessons 102.11 & 12.12

Question 1

The chemical symbol for carbon is:

Accepted Answer

C

Question 2

When two hydrogen atoms combine with one oxygen atom, the result is a water molecule, which is a(n):

Accepted Answer

compound

Question 3

Electrons have which type of electrical charge?

Accepted Answer

negative

Question 4

Water freezing and becoming ice is an example of what type of change?

Accepted Answer

physical change

Question 5

Two or more of the same atoms joined together by a chemical bond is a(n):

Accepted Answer

molecule

Question 6

Hair consists of 97%:

Accepted Answer

keratin

Question 7

Which of the following conditions is an example of chemical change?

Accepted Answer

oxygen and hydrogen forming water

Question 8

On the pH scale, numbers less than 7 indicate a(n):

Accepted Answer

acid solution

Question 9

Which bonds found in the hair can be easily broken by heat or water?

Accepted Answer

hydrogen bonds

Question 10

All matter that is now living or was alive at one time, with carbon present is:

Accepted Answer

organic chemistry

Question 11

Matter with definite weight and volume but no definite shape is called:

Accepted Answer

liquid

Question 12

Basic substances that cannot be broken down into simpler substances are called:

Accepted Answer

elements

Question 13

A solution that has more positive hydrogen ions than negative hydroxide ions is:

Accepted Answer

acid

Question 14

The term used to identify anything that occupies space and has weight is called:

Accepted Answer

matter

Question 15

In what pH range is skin and hair?

Accepted Answer

4.5-5.5

Question 16

On the pH scale, numbers greater than 7 indicate a(n):

Accepted Answer

alkaline solutions

Question 17

What is the side bond that is of the greatest concern to the salon professional?

Accepted Answer

disulfide bonds

Question 18

The scientific study of matter and the physical and chemical changes of matter is known as:

Accepted Answer

chemistry

Question 19

Which of the following statements describes how human hair is formed?

Accepted Answer

linking together of protein groups

Question 20

All of the following statements regarding pH are true EXCEPT:

Accepted Answer

values below 7 indicate more alkalinity

Question 21

What is created when amino acids join together in chains?

Accepted Answer

proteins

Question 22

All matter that is not alive, has never been alive and does not contain

Accepted Answer

inorganic chemistry

Question 23

Amino acids that create proteins are linked together end to end by:

Accepted Answer

peptide bonds

Question 24

Atoms have three main parts: protons, neutrons and:

Accepted Answer

electrons

Question 25

A pH of 9 is how many more times acidic than a pH of 6?

Accepted Answer

1,000

Lessons 102.11 & 12.12

Questions 25

Lessons 102.11 & 12.12

Questions 25