lab safety test

Question 1

examples of combustible materials:

Answer 1

alcohol, carbon disulfide, acetone

Question 2

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

Answer 2

mix; estimate volume

Question 3

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

Answer 3

grind crystals; lumpy chemicals

Question 4

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

Answer 4

heat; solid substances; high temperatures

Question 5

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

Answer 5

water; solid substance

Question 6

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 …

Answer 6

evaporating dish; beaker; retain; accurate

Question 7

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

Answer 7

liquid being evaporated; water; homogenous solution

Question 8

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

Answer 8

collected; displacement

Question 9

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

Answer 9

heated; making; storing

Question 10

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

Answer 10

heating; boiling; stirring

Question 11

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

Answer 11

pneumatic trough

Question 12

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

Answer 12

water; lab glassware

Question 13

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

Answer 13

volumes of liquid; measurement

Question 14

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

Answer 14

separate; filtration; transfer chemicals

Question 15

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

Answer 15

support; hold/clamp

Question 16

stirring with thermometer → If glass

Answer 16

no

Question 17

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

Answer 17

heated; titrations; concentration

Question 18

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

Answer 18

all times; acids; bases

Question 19

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

Answer 19

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

Question 20

glass rod with nichrome wires: used in …

Answer 20

flame tests

Question 21

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

Answer 21

test tubes; glass tubing; extreme temperatures

Question 22

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

Answer 22

crucible; funnel

Question 23

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

Answer 23

solid chemicals

Question 24

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

Answer 24

pick up; hold; crucible; heater; inefficient

Question 25

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

Answer 25

apparatus; liquids; gases

Question 26

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

Answer 26

stirring; mixing; chemicals

Question 27

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

Answer 27

scrub; glassware

Question 28

ceramic square: used under .... or ...;

Answer 28

hot apparatus; glassware;

Question 29

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

Answer 29

heat; burner flame; crucibles; container

Question 30

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

Answer 30

substances; experiments; flame tests

Question 31

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

Answer 31

glass tubing; desired length

Question 32

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

Answer 32

support; flame of a burner

Question 33

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

Answer 33

approximate volumes; heated; beaker

Question 34

gas collecting tube: used to measure ...

Answer 34

gas volumes

Question 35

clamps: fastened to support ....

Answer 35

apparatus

Question 36

types of clamps:

Answer 36

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

Question 37

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

Answer 37

pick up; hold; body oils/sweat

Question 38

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

Answer 38

stir; pouring liquids; precipitates

Question 39

condenser: used in ... procedures

Answer 39

distillation

Question 40

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

Answer 40

graduated cylinder; volumes; titrations; volumes

Question 41

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

Answer 41

solution volumes; volumetric pipet

Question 42

thermometer: measures

Answer 42

temperature

Question 43

pipet bulb: used in ... with a solution

Answer 43

filling a pipet

Question 44

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

Answer 44

mass; equipment

Question 45

heating symbol indicates that you should be carefult not to touch

Answer 45

hot objects with bare hands

Question 46

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

Answer 46

open flame; flammable liquid

Question 47

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

Answer 47

caustic; corrosive

Question 48

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

Answer 48

breakage

Question 49

dangerous vapors symbol: indicates presence/ product of

Answer 49

dangerous vapors

Question 50

explosion symbol: indicates that there is potential for

Answer 50

explosion

Question 51

poison symbol: indicates presence of a

Answer 51

poisonous substance

Question 52

electrical shock symbol: indicates potential for

Answer 52

electrical shock

Question 53

radiation: indicates a ... substance

Answer 53

radioactive

Question 54

disposal symbol: indicates that a chemical should be

Answer 54

disposed of in a special way

Question 55

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

Answer 55

wash hands; touching face/eyes