Chem 405B Quiz 2

Question 1

Where can we find information about a Hazard?

Answer 1

-chemical bottle label
-books and pamphlets
-SDS
-Internet sources

Question 2

what are some internet sources for chemical hazard information?

Answer 2

-OSHA website
-Sigma Aldrich
-databases

Question 3

How many sections are on safety data sheet general format?

Answer 3

16 sections

Question 4

What sections include chemical and hazard information?

Answer 4

section 1-3

Question 5

what section number includes emergency measures?

Answer 5

sections 4-6

Question 6

what is included in emergency measures?

Answer 6

-first aid
-firefighting

Question 7

what is included in managing hazard?

Answer 7

-storage info
-PPE
-exposure controls

Question 8

What section numbers include managing hazard?

Answer 8

section 7-8

Question 9

what sections include data for hazard recognition and assessment?

Answer 9

section 9-12

Question 10

what is included in data for hazard recognition and assessment?

Answer 10

-physical properties
-reactivity
-toxicological and ecological info

Question 11

what section numbers include regulated activities?

Answer 11

section 13-15

Question 12

Other extra information such as NFPA ratings and SDS revision date is in which section number?

Answer 12

16

Question 13

physical hazards can cause what damages?

Answer 13

Injury/health damage/environmental/property damage

Question 14

what are some types of health hazards?

Answer 14

irritants, carcinogens, acute toxicity

Question 15

what are some types of physical hazards?

Answer 15

corrosive
flammable
explosives

Question 16

HC-1 is the ___ dangerous, HC-5 is the ___ dangerous.

Answer 16

Most, least

Question 17

Danger means

Answer 17

most severe hazard

Question 18

Warning means

Answer 18

less severe than danger but more dangerous that if there was no signal word

Question 19

For flammable liquids, HC-1, HC-2 means:

Answer 19

Danger

Question 20

For flammable liquids, HC-3, HC-4 means:

Answer 20

Warning

Question 21

For acutely toxic compounds HC-1, HC-2, HC-3 means:

Answer 21

Danger

Question 22

For acutely toxic compounds HC-4 means:

Answer 22

warning

Question 23

GHS signal words and hazard categories are differrent than NFPA hazard system, why?

Answer 23

GHS states that 1 is the most dangerous while NFPA says 4 is the most hazardous/dangerous.

Question 24

Most acid burns are ___, do not penetrate to inner tissues.

Answer 24

Superficials

Question 25

acids with concentrations less than 1 M are usually not corrosive except for ___ acid.

Answer 25

HF, even at 0.01M it can be reactive

Question 26

what is the antidote used to treat HF?

Answer 26

Calcium gluconate

Question 27

___ can penetrate tissues more than ___

Answer 27

bases, acids

Question 28

eyes can be damaged if pH is greater than __

Answer 28

10

Question 29

what is an example of strong base:

Answer 29

NaOH, KOH

Question 30

what is flashpoint:

Answer 30

The lowest temperature at which an ignitable gas mixture forms above its surface

Question 31

lower flash point = __ flammable

Answer 31

more

Question 32

Boiling point:

Answer 32

Temp at which vapor pressure is greater than or equal to atmospheric pressure

Question 33

lower flash point = ___ flammable

Answer 33

more

Question 34

what does Vapor pressure tell you?

Answer 34

Tells you how much of a substance will be in gaseous form at a given temp.

Question 35

High vapor pressure = ____ flammable

Answer 35

more

Question 36

Pvap increases with ____

Answer 36

T (non-linear increase)

Question 37

Pvap decreases with _____

Answer 37

boiling point

Question 38

As MW increases, flash point ____, vapor pressure ____, and it is less volatile and ___ flammable.

Answer 38

increases, decreases, less

Question 39

what are some flammable solids?

Answer 39

phosphorus, sodium, potassium

Question 40

when does incomplete combustion occur?

Answer 40

when there is not enough O2 to allow the fuel to react completely to produce Co2 and H2O.

Question 41

H2O is produced by incomplete combustion but ___ is produced instead of carbon dioxide.

Answer 41

carbon monoxide

Question 42

Metal catalysts are often used for ___

Answer 42

hydrogenation reaction

Question 43

metal catalysts are pyriphoric and will react ___ when exposed to ___.

Answer 43

violently, air

Question 44

what does the oxygen balance equation give us?

Answer 44

used to predict the chemical instability or explosive properties of some compounds.

Question 45

The closer a chemical is to a _____, the more unstable or explosive it will be.

Answer 45

Zero oxygen balance

Question 46

peroxides are compounds with ___ linkage.

Answer 46

O-O

Question 47

chemical source ----- _____ ------ Internalization----_____

Answer 47

immediate vicinity of person, absorption

Question 48

what are some factors that effect toxicity?

Answer 48

diet, health status, dose, duration

Question 49

what does a dose-response curve for toxicants and drugs show?

Answer 49

dose vs its response

Question 50

what is LD50?

Answer 50

dose at which 50% of test subjects die. The lower the LD50, the more toxic

Question 51

Not all toxic chemicals are ___

Answer 51

poisons

Question 52

what is indirect chemical damage?

Answer 52

body converts toxicant to chemically reactive form

Question 53

what are some ways toxicants cause toxicity?

Answer 53

direct/indirect chemical damage, receptor agonists/antagonists

Question 54

what is an example of indirect chem damage?

Answer 54

acetaminophen poisoning

Question 55

what causes asphyxiation

Answer 55

any gas that displaces enough oxygen from air