Lab 18: Effectiveness of Antiseptics & Disinfectants

Question 1

define sterilization

Answer 1

killing or removal of all microorganisms on an object or in a material (including spores)

Question 2

define disinfection

Answer 2

a reduction of microbial organisms to a level that poses no threat of disease

Question 3

define antiseptic

Answer 3

a chemical agent that is used in association with the skin and mucous membranes to destroy microorganisms or inhibit their growth

Question 4

what is an example of an antiseptic?

Answer 4

mouthwash

Question 5

-static..

Answer 5

controlling

Question 6

-cidal….

Answer 6

killing

Question 7

define broad spectrum

Answer 7

an agent that exerts an effect against many different organisms

Question 8

define narrow spectrum

Answer 8

an agent that exerts an effect against only a few organisms

Question 9

define disinfectant

Answer 9

a chemical agent that is used on inanimate objects to destroy microorganisms

Question 10

list 4 disinfectants

Answer 10

bleach
formaldehyde
lysol (pine-sol)
ammonia

Question 11

bleach is a..

Answer 11

halogen

Question 12

formaldehyde is a..

Answer 12

aldehyde

Question 13

lysol & pine-sol are..

Answer 13

surfactants

Question 14

list 4 antiseptics

Answer 14

70% isopropanol
3% H2O2
mouthwash
betadine

Question 15

70% isopropanol is a..

Answer 15

alcohol

Question 16

3% H2O2 is a…

Answer 16

peroxide

Question 17

mouthwash is a

Answer 17

alcohol

Question 18

betadine is a

Answer 18

halogen

Question 19

what chemical properties influence diffusion into agar

Answer 19

molecular weight
hydrophobicity
volatility