Lab equipments

Question 1

Beaker

Answer 1

Are used to mix chemicals, dissolve solids into solutions, heat or cool solutions and measure liquid volume in mL. They have very poor accuracy and should only be used to estimate volumes.

Question 2

Erlenmeyer flask

Answer 2

It was developed for swirling solutions with minimum loss and they can be plugged with stoppers and used to catch vapor or condensed liquid. Their graduations are not very accurate.

Question 3

Graduated cylinder

Answer 3

are used to more accurately measure volumes of liquids in milliliters (mL). Measurement readings should be taken at eye level from the bottom of the meniscus, the concave curved surface formed at the top of the liquid.

Question 4

Volumetric flask

Answer 4

used to accurately prepare solutions. A weighed amount of solid chemical is placed at the bottom, and the liquid solvent is added until the fill line is reached.

Question 5

Pipette

Answer 5

are used to measure or transfer liquids.

Question 6

Burette

Answer 6

is an extremely accurate device with a stopcock at the bottom used to measure volumes of reagents. Often used to determine the concentration of a solution by dispensing a solution with a known concentration in a process known as titration.

Question 7

Dropper

Answer 7

is a glass tube with a hollow rubber bulb at one end and a small opening at the other, for drawing in a liquid and expelling it in drops.

Question 8

Micropipette

Answer 8

is a precise method used to transfer small volumes of liquids in chemical, biological and medical laboratories.

Question 9

Ring stand

Answer 9

is a metal stand consisting of a long upright rod attached to a heavy rectangular base that is used with rings and clamps for supporting laboratory apparatus.

Question 10

Double burette clamp

Answer 10

is attached to a ring stand to hold up to two burets

Question 11

Iron support ring

Answer 11

is mounted to a ring stand and is used in chemistry labs to stabilize flasks, beakers and other glassware and support them over the work area.

Question 12

Test tube clamp

Answer 12

is attached to a ring stand and is used to hold test tubes and other cylindrical pieces of equipment such as burets, gas collection tubes, data-collection probes, etc.

Question 13

Test tube rack

Answer 13

are used for holding test tubes upright when they contain chemicals, and also hold test tubes upside down to dry. They can be made of wood, metal or plastic

Question 14

Test tube

Answer 14

are narrow glass cylinders, closed at one end, that are used for mixing, heating, and storing small quantities of chemicals. They are usually made of a type of glass (such as Pyrex®) that can withstand high temperatures.

Question 15

Test tube brush

Answer 15

is used for cleaning test tubes and narrow mouth laboratory glassware, such as beakers and flasks.

Question 16

Funnel

Answer 16

are used to pour liquids into narrow mouth containers such as flasks and bottles.

Question 17

Buchner funnels

Answer 17

are special two-piece funnels for filtering mixtures through filter paper into a filtering flask.

Question 18

Mortar and pestle

Answer 18

is a device used since ancient times to prepare ingredients or substances by crushing and grinding them into a fine paste or powder.

Question 19

Crucible

Answer 19

is used to heat solid chemicals over a burner at high temperatures. They are made from heat resistant ceramics to prevent breakage.

Question 20

Cover

Answer 20

is used to contain any smoke particles.

Question 21

Clay triangle`

Answer 21

is used to hold a crucible while it is being heated.

Question 22

Watch glass

Answer 22

can be used to cover beakers, evaporate water from solutions, weigh out solid chemicals, or observe samples under a stereo microscope.

Question 23

Evaporating dish

Answer 23

is used to separate water and solids from a solution by allowing the water to evaporate off into the air. This is usually done by heating the evaporating dish over a burner or hot plate.

Question 24

Bunsen burner

Answer 24

is attached to a gas line and lit to provide heat for performing experiments.

Question 25

Hot plates

Answer 25

are generally used to heat glassware or its contents. Some hot plates also contain a magnetic stirrer, allowing the heated liquid to be stirred automatically.

Question 26

Hot mitt

Answer 26

is used to grip and transfer hot glassware.

Question 27

Wire gauze

Answer 27

is a sheet of thin metal that has net-like crosses or a wire mesh. The purpose of wire gauze is to be placed on the support ring that is attached to the ring stand between the Bunsen burner and the beakers to diffuse the heat and to support the beakers or other glassware or flasks during heating.

Question 28

Test tube holder

Answer 28

is used to hold and transport hot test tubes.

Question 29

Crucible tongs

Answer 29

are used to hold and transport hot crucibles.

Question 30

Breaker tongs

Answer 30

are used to hold and transport hot beakers. They have a plastic coating which should be kept away from heat/flames.

Question 31

Weigh boat

Answer 31

is an open container, often disposable, used for weighing samples.

Question 32

Scoopula or metal scoop

Answer 32

is an instrument used to transfer solids from one place to another.

Question 33

Top loading balance

Answer 33

are used to measure the mass of substances accurately.

Question 34

Well plate

Answer 34

is a flat plate that looks like a tray with multiple wells that are used as small test tubes.

Question 35

Forceps

Answer 35

are a handheld, hinged instrument used for grasping and holding objects. They are used when fingers are too large to grasp small objects or when many objects need to be held at one time while the hands are used to perform a task.

Question 36

Thermometer

Answer 36

is used to measure temperature in degrees Celsius or Fahrenheit. Most sold today are filled with alcohol instead of mercury

Question 37

Metric ruler

Answer 37

also called a rule or, especially in the printing industry, a line gauge, is a measuring instrument used in technical drawing, geometry, engineering, printing and construction to rule straight lines and calculate distances in centimeters and inches.

Question 38

Stirring rods

Answer 38

are used to stir mixtures and facilitate the pouring of liquids. They are usually made of glass

Question 39

Analytical balances

Answer 39

are much more precise and cost much more than top loading balance

Question 40

Wash bottle

Answer 40

is used to store and dispense distilled or deionized water.

Question 41

Goggles

Answer 41

are to be worn to protect your eyes when handling chemicals or glass.

Question 42

Apron

Answer 42

is personal protection equipment (PPE) worn to protect clothing from chemical spills

Question 43

Three-prong clamp

Answer 43

is attached to a ring stand and is used to secure lab equipment.

Question 44

Thin stem pipet

Answer 44

is made of disposable plastic and is used for transferring small amounts of liquid, usually one drop at a time.

Question 45

Graduated pipet

Answer 45

is made of disposable plastic with graduated marking on it so that a precise volume of liquid can be transferred

Question 46

Stopwatch

Answer 46

is a watch that can be started and stopped for exact timing

Question 47

Centrifuge

Answer 47

is a machine with a rapidly rotating container that applies centrifugal force to its contents, typically to separate fluids of different densities or liquids from solids.

Question 48

Petri dish

Answer 48

are used to hold specimens for observation and to grow cultures.

Question 49

Triangular file

Answer 49

is used in the chemistry lab to score glass tubing to create clean breaks in the glass.