Laboratory Equipments and Safety Measures

Question 1

Always wear a __________ ____

Answer 1

laboratory gown

Question 2

Keep ________ and ___________ solvents away from open flames

Answer 2

volatile and inflammable

Question 3

Always use reagents, water, and gas ____________

Answer 3

economically

Question 4

Never _____ chemicals with your bare hands nor _____ chemicals unless reacted to do so

Answer 4

touch nor taste

Question 5

Avoid contamination of ________

Answer 5

reagents

Question 6

Corrosive acids and strongly caustic substances should be carefully handled. Spilled acids on the skin are neutralized with ______ _________, while strong bases with ______ ______ ____ and then wash off immediately with plenty of water.

Answer 6

1) sodium carbonate
2) dilute acetic acid

Question 7

When preparing dilute acid solutions, do you always add acid to water or add water to the acid?

Answer 7

Add acid to water

Question 8

Where should you pour waste acids?

Answer 8

disposable jar

Question 9

Strictly prohibited

Answer 9

eating and smoking

Question 10

When heating, always use a ___________ _____ that is not more than two inches high. Always turn off the gas burner when not in use.

Answer 10

non-luminous flame

Question 11

This equipment is used to contain liquids and for mixing, heating, cooling, incubation, filtration, storage, and other liquid-handling processes. Their slanted sides and narrow necks allow the contents to be mixed by swirling without the risk of spills, which is useful for titrations and boiling liquids.

Answer 11

erlenmeyer flask

Question 12

Used as a reaction container or to hold liquid or solid samples. It has a flat bottom and a small spout for pouring.

Answer 12

beaker

Question 13

They are used to mix chemicals, hold liquids, heat liquids, grow bacteria, and collect or store bodily fluids, like blood and semen.

Answer 13

test tube

Question 14

Flat-bottomed glass containers with either screw-on tops or stoppers. They come in many sizes and shapes and are used to hold small amounts of liquids or solids.

Answer 14

vials

Question 15

Laboratory flask, calibrated to hold an accurate specific volume at a specific temperature. They are used for accurate dilutions and preparation of solutions and any other liquids needed in the laboratory workflow.

Answer 15

volumetric flask

Question 16

Piece of laboratory apparatus used to measure the volume of a liquids, chemicals or solutions. They are more accurate and precise than laboratory flasks and beakers.

Answer 16

graduated cylinder

Question 17

Generally used for moving small amounts of liquid or when measuring and dispensing liquid in mL units. Works as a dropper.

Answer 17

pipettes

Question 18

Used to channel liquids or fine-grained chemicals (powders) into labware with a narrow neck or opening. Often, they are made of plastic such as polypropylene. Reusable products can be sterilized in an autoclave.

Answer 18

funnels