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Analytical Chemistry > Common Laboratory Hazards > Flashcards

Common Laboratory Hazards Flashcards

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1
Q

_____ can be ignited at concentrations less than their lower flammable limits and at temperature below their flash points

A

Flammable liquids

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2
Q

Is the lowerst temperature at 1atm at whoch liquid releases flammable vapor into the atmosphere enough to ignite when mixed with air at or near the surface of the liquid upon application

A

Flash point

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3
Q

Hazard class____
This fires involving ordinary combistible solid materials such as wood, paper, rubber or cloth. The required fire extinguisher is watee type multipurpose dry chemical type or wet chemical type

A

Hazard class A

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4
Q

This type of fire includes energized electrical equipment and we usually use dry chemical type or HCFC type of fire extinguisher

A

Gazard class C

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5
Q

Fires involving energized combustible metals such as aluminum, magnesium, sodium, and titanium. We usually use dry powder fire extinguisher

A

Type D

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6
Q

Dry chemicals

A

Abc red body white band

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7
Q

Carbon monoxide BC

A

Red body black band

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8
Q

Foam AB

A

RED BODY BLUE BAND

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9
Q

Halon substitute light green body white band

A

ABC

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10
Q

These Ruses from the highly reactive nature of chemicals in which in the presence of a stimulus it may cause a sudden increase in temperature or explosion

A

Reactive hazard

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11
Q

A wayer reactive substances such as PCL4 which reacts exothermically with water resulting a reaction is there is no sufficient coolant water

A

Halides

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12
Q

Water reactive substances that react with water producing heat and flammable hydrogen gas which ignited or combines explosively with atmospheric oxygen

A

Halides

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13
Q

Under reactive hazards we have water reactive hazard such as

A

Alkali metals
Hydrides
Halides

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14
Q

These are materials that ignite fue to the rapid oxidation by oxygen or moisture in the air.

A

Pyrophoric substances

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15
Q

These are materials that ignite fue to the rapid oxidation by oxygen or moisture in the air.

A

Pyrophoric substances

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16
Q

This type of hazard includes gases which are contained in a receptacle at a pressure of 200kpa (gauge) or more at 20°C or which are loquified and refrigerated. They comprise compressed gas, liquefied gas, dissolved gas, refrigerated liquefied gases.

A

Gases under pressure

17
Q

This type ofbhazard arises from the explosion due to rapid expansion or evolution of hases usually in a closed or restricted system

A

Explosion hazards

18
Q

They poses explosion hazards where reactions that result in sudden rapid ruse in temperature if the material that is being heated ehich may become violent

A

Runaway reaction

19
Q

Are hazardous substances that enters the bidy thru absorption, inhalation, injection, injestion.

A

Toxic substances

20
Q

Are chemical agents that causes undesirable response to tissues upon contactbor exposure

A

Irritants

21
Q

Causes depletion of oxygen to the tissues. These caaniy be seen, heard, smelled but can be detected. Examples includes CO, cyanide and phosphine

A

Asphyxians

22
Q

Mainly affects the central nervous system by inducing depressants effect

A

Narcotics or anethetics

23
Q

These are agents that cuase toxic actions mainly on internal organs

A

Systemic poisons

24
Q

Are agents that cause cancer to exposed individuals examples includes benzene, formaldehyde, cadmium, vinyl chloride.

A

Carcinogens

25
Q

Are chemical agents that affect the cells of the person upon exposure that may alter DNA examples includes benzene and ionizing radiation

A

Mutagens

26
Q

Are agents that cause birth defects upon exposure to the pregnant woman. Examples includes thalidomide, ionizing radiation and organic mercury compounds.

A

Teratogens

27
Q

Agents that cause allergic reaction in people when contact overtime to certain chemicals. Exposure can manifest swelling or airways or developing lung disease asthma or contact dermititis. Examples, chlorine alkalis, benzylic and allylic halides

A

Sensitizers or allergens

28
Q

Liquid droplets os substance or mixture suspended in a gas usually air that is formed via condensation of supersaturated vapors or mainly by shearing of liquid

A

Mist

29
Q

Gaseous form of substances or mixture released from its liquid or solid state

A

Vapor

30
Q

Are solid particles of a substance or mixture suspended in gas or air that is commonly formed by mechanical process

A

Dust

31
Q

Extent to which substances is taken up by an organism and distributed to an area within the organism

A

Bioavailability

32
Q

Is the net result of uptake transformation and elimination of a substances in a organism due to all routes of exposure such as air water sediments or soil and even food!

A

Bioaccumulation

33
Q

The net result of uptake, transformation and eliminatioj of a substance in an organism due to waterborne exposure

A

Bioconcentration

Analytical Chemistry (9 decks)

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