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Biochem > Chem 405B Quiz 2 > Flashcards

Chem 405B Quiz 2 Flashcards

1
Q

Where can we find information about a Hazard?

A

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

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2
Q

what are some internet sources for chemical hazard information?

A

-OSHA website
-Sigma Aldrich
-databases

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3
Q

How many sections are on safety data sheet general format?

A

16 sections

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4
Q

What sections include chemical and hazard information?

A

section 1-3

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5
Q

what section number includes emergency measures?

A

sections 4-6

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6
Q

what is included in emergency measures?

A

-first aid
-firefighting

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7
Q

what is included in managing hazard?

A

-storage info
-PPE
-exposure controls

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8
Q

What section numbers include managing hazard?

A

section 7-8

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9
Q

what sections include data for hazard recognition and assessment?

A

section 9-12

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10
Q

what is included in data for hazard recognition and assessment?

A

-physical properties
-reactivity
-toxicological and ecological info

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11
Q

what section numbers include regulated activities?

A

section 13-15

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12
Q

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

A

16

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13
Q

physical hazards can cause what damages?

A

Injury/health damage/environmental/property damage

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14
Q

what are some types of health hazards?

A

irritants, carcinogens, acute toxicity

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15
Q

what are some types of physical hazards?

A

corrosive
flammable
explosives

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16
Q

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

A

Most, least

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17
Q

Danger means

A

most severe hazard

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18
Q

Warning means

A

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

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19
Q

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

A

Danger

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20
Q

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

A

Warning

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21
Q

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

A

Danger

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22
Q

For acutely toxic compounds HC-4 means:

A

warning

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23
Q

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

A

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

24
Q

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

A

Superficials

25
Q

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

A

HF, even at 0.01M it can be reactive

26
Q

what is the antidote used to treat HF?

A

Calcium gluconate

27
Q

___ can penetrate tissues more than ___

A

bases, acids

28
Q

eyes can be damaged if pH is greater than __

A

10

29
Q

what is an example of strong base:

A

NaOH, KOH

30
Q

what is flashpoint:

A

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

31
Q

lower flash point = __ flammable

A

more

32
Q

Boiling point:

A

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

33
Q

lower flash point = ___ flammable

A

more

34
Q

what does Vapor pressure tell you?

A

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

35
Q

High vapor pressure = ____ flammable

A

more

36
Q

Pvap increases with ____

A

T (non-linear increase)

37
Q

Pvap decreases with _____

A

boiling point

38
Q

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

A

increases, decreases, less

39
Q

what are some flammable solids?

A

phosphorus, sodium, potassium

40
Q

when does incomplete combustion occur?

A

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

41
Q

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

A

carbon monoxide

42
Q

Metal catalysts are often used for ___

A

hydrogenation reaction

43
Q

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

A

violently, air

44
Q

what does the oxygen balance equation give us?

A

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

45
Q

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

A

Zero oxygen balance

46
Q

peroxides are compounds with ___ linkage.

A

O-O

47
Q

chemical source —– _____ —— Internalization—-_____

A

immediate vicinity of person, absorption

48
Q

what are some factors that effect toxicity?

A

diet, health status, dose, duration

49
Q

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

A

dose vs its response

50
Q

what is LD50?

A

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

51
Q

Not all toxic chemicals are ___

A

poisons

52
Q

what is indirect chemical damage?

A

body converts toxicant to chemically reactive form

53
Q

what are some ways toxicants cause toxicity?

A

direct/indirect chemical damage, receptor agonists/antagonists

54
Q

what is an example of indirect chem damage?

A

acetaminophen poisoning

55
Q

what causes asphyxiation

A

any gas that displaces enough oxygen from air

56
Q
A

Biochem (15 decks)

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