lab safety test Flashcards

1
Q

examples of combustible materials:

A

alcohol, carbon disulfide, acetone

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2
Q

beakers can be used to …. materials and to ….

A

mix; estimate volume

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3
Q

mortar and pestle (porcelain) may be used to … and … to a powder

A

grind crystals; lumpy chemicals

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4
Q

crucible and cover (porcelain): used to … small amounts of …. at …

A

heat; solid substances; high temperatures

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5
Q

crucible can be used to get rid of …. in a …

A

water; solid substance

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6
Q

watch glass (glass) used to cover an … or ….; if a substance is escaping from either of these, the watch glass will help to … it and make data more …

A

evaporating dish; beaker; retain; accurate

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7
Q

evaporating dish (porcelain) used to contain small volumes of …..; used to separate a solid from … in a ….

A

liquid being evaporated; water; homogenous solution

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8
Q

pneumatic trough: used in experiment in which a gas is …. by water ….

A

collected; displacement

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9
Q

Florence flask (glass): may be …, used in … and for …. solutions;

A

heated; making; storing

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10
Q

the shape of the Florence flask allows for efficient …., …., as well as ….

A

heating; boiling; stirring

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11
Q

wide mouth collection bottle (glass): used with …;

A

pneumatic trough

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12
Q

plastic wash bottle (plastic): squeeze sides to dispense …; used to wash ….

A

water; lab glassware

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13
Q

dropper pipet (glass tip with rubber bulb) used to transfer small….; enables one to make a …. accurate in a graduated cylinder (for example)

A

volumes of liquid; measurement

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14
Q

funnel (glass/plastic): can be used to …. a mixture by means of …; can also be used to …. to small mouthed containers

A

separate; filtration; transfer chemicals

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15
Q

ring stand: metal rod fixed upright in a heavy metal base; has many uses as a …; used to …. lab equipment

A

support; hold/clamp

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16
Q

stirring with thermometer → If glass

A

no

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17
Q

Erlenmeyer flask (glass): may be …, used in …. in which the … of an unknown solution is discovered through using another solution

A

heated; titrations; concentration

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18
Q

safety goggles: must be worn at ….; used to prevent dangerous chemicals such as …. or …. from splashing into eyes

A

all times; acids; bases

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19
Q

rubber stoppers: used to plug … and …. to prevent …/… from ….

A

flasks; test tubes; liquids/gases; escaping their containers

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20
Q

glass rod with nichrome wires: used in …

A

flame tests

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21
Q

test tube holder: (spring metal), used to hold … or …., particularly when these containers are at ….

A

test tubes; glass tubing; extreme temperatures

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22
Q

clay triangle: wire frame with porcelain supports, used to support a …; can also be used to support a …. when filtration lasts for a lengthy time

A

crucible; funnel

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23
Q

scoopula: (metal/porcelain) used to transfer ….

A

solid chemicals

24
Q

crucible tongs: (iron/nickel) used to … and … small items, particularly a … after it has been ….; however, these tongs are quite ….

A

pick up; hold; crucible; heater; inefficient

25
Q

rubber tubing: used to connect … so as to transfer … or …

A

apparatus; liquids; gases

26
Q

metal spatula: can be used for … or … chemicals; can also hold ..

A

stirring; mixing; chemicals

27
Q

test tube brush: (bristles with wire handle); used to … small diameter …

A

scrub; glassware

28
Q

ceramic square: used under …. or …;

A

hot apparatus; glassware;

29
Q

wire gauze: used to spread the … of a …; can also be used to transfer …. as well as to support a …. when heating

A

heat; burner flame; crucibles; container

30
Q

burner: used to heat … during … and can also be used for …

A

substances; experiments; flame tests

31
Q

triangular file: used to scratch … prior to breaking to …

A

glass tubing; desired length

32
Q

tripod: used to … containers of chemicals above the ….

A

support; flame of a burner

33
Q

graduated cylinder: used to measure ….; must not be ….; more accurate source of measurement than a …

A

approximate volumes; heated; beaker

34
Q

gas collecting tube: used to measure …

A

gas volumes

35
Q

clamps: fastened to support ….

A

apparatus

36
Q

types of clamps:

A

buret test tube clamp; clamp holder; double buret clamp; ring clamp; 3 pronged jaw clamp; ring clamp

37
Q

forceps: used to … or … small objects; also used to carry crucibles to avoid having… to interfere with data

A

pick up; hold; body oils/sweat

38
Q

stirring rod and rubber policeman: used to …, assist in …, and for removing … from a container

A

stir; pouring liquids; precipitates

39
Q

condenser: used in … procedures

A

distillation

40
Q

buret: similar to a ….; used to measure … of solutions in ….; delivers specific … of liquids

A

graduated cylinder; volumes; titrations; volumes

41
Q

graduated pipet: used to measure …; less accurate than a ….

A

solution volumes; volumetric pipet

42
Q

thermometer: measures

A

temperature

43
Q

pipet bulb: used in … with a solution

A

filling a pipet

44
Q

platform balance: used to find the … of different … in lab

A

mass; equipment

45
Q

heating symbol indicates that you should be carefult not to touch

A

hot objects with bare hands

46
Q

fire symbol: indicates presence of … or alerts you that you are working with a …

A

open flame; flammable liquid

47
Q

corrosive substance: indicates a … or … substance (typically acids)

A

caustic; corrosive

48
Q

breakage symbol: indicates an activity in which likelihood of … is greater

A

breakage

49
Q

dangerous vapors symbol: indicates presence/ product of

A

dangerous vapors

50
Q

explosion symbol: indicates that there is potential for

A

explosion

51
Q

poison symbol: indicates presence of a

A

poisonous substance

52
Q

electrical shock symbol: indicates potential for

A

electrical shock

53
Q

radiation: indicates a … substance

A

radioactive

54
Q

disposal symbol: indicates that a chemical should be

A

disposed of in a special way

55
Q

hygiene: reminds to clean and …. as well as to avoid

A

wash hands; touching face/eyes