Esti Chapter 7

Question 1

How many naturally occurring elements exist?

Accepted Answer

92

Question 2

Which biochemical component serve as building blocks connecting to form large complex compounds

Accepted Answer

monomers

Question 3

All of the following statements are true about physical changes EXCEPT

Accepted Answer

a new substance with different composition is created

Question 4

The science that deals with all matter that is now living or was alive at one time is called

Accepted Answer

organic chemistry

Question 5

A ph of 6 is 100 more times more acidic than neutral 7 and 6 is 100 times less acidic than 5.

Accepted Answer

false

Question 6

Which of the following has been formulated with a thickening agent to increase viscosity

Accepted Answer

gel

Question 7

All of the following statements about periodic table are true EXCEPT:

Accepted Answer

scientific shorthand identifies the elements similarities

Question 8

All of the following statements are true about the ph scale EXCEPT:

Accepted Answer

acids have a value of seven or greater

Question 9

Ingredients that possess the ability to destroy bacteria on the surface of the skin are:

Accepted Answer

antibacterial

Question 10

Which of the following is a group of products intended to treat symptoms or cure medical issues

Accepted Answer

drugs

Question 11

There are 5 common amino acids

Accepted Answer

false

Question 12

All of the following statements regarding aerosols are true EXCEPT

Accepted Answer

they are environmentally friendly

Question 13

When no trading is taking place and atoms are sharing the electrons, they are held together by

Accepted Answer

covalent bond

Question 14

Skin care lotions are an example of what distinct form of matter?

Accepted Answer

liquid

Question 15

Which of the following items have a negative electrical charge?

Accepted Answer

electrons

Question 16

Which of the following may contain salts such as calcium and magnesium?

Accepted Answer

hard water

Question 17

What ingredient is used in cosmetic products to keep skin firm yet soft and easy when applied

Accepted Answer

fatty acids

Question 18

Human skin is a solid

Accepted Answer

true

Question 19

The unifying concept used to organize elements and their similarities is called a

Accepted Answer

periodic law

Question 20

A solution is a mixture of 2 or more nonmixable substances united by small droplets of a binder

Accepted Answer

false

Question 21

Acids or bases used to adjust the desired product ph level are called:

Accepted Answer

ph adjustors

Question 22

The chemical behavior of an atom depends mostly on the

Accepted Answer

# of electrons in the outermost shell

Question 23

Which of the following examples of silicone makes a product feel soft, especially sunscreens?

Accepted Answer

dimethicone copolyol

Question 24

Ingredients responsible for producing the desired effect are called:

Accepted Answer

active

Question 25

All of the following statements about emollients are true EXCEPT that they:

Accepted Answer

range in concentration between 20-30%

Question 26

Which of the following ingredients are likely to clog pores and cause pimples?

Accepted Answer

comedogenic

Question 27

What is created when two different elements are chemically united?

Accepted Answer

compound

Question 28

Th molecular weight of each element is determined by the

Accepted Answer

protons and neutrons

Esti Chapter 7

Questions 28

Esti Chapter 7

Questions 28