Laboratory Reagents and Equipment

Question 1

A reagent that meets or exceed the specifications of purity

Answer 1

Reagent Grade

Question 2

Chemicals of reasonable purity for application that have no official standard for purity

Answer 2

Technical Grade

Question 3

Reagent or solution from large container bottle, usually purchased from manufacturers

Answer 3

Stock Solution or Stock Reagent

Question 4

Repacked solution than can always be used for experiments

Answer 4

Working Solution

Question 5

2 Categories of Lab Equipment

Answer 5

Mass Equipment
Volumetric Equipment

Question 6

2 Types of Volumetric Equipment

Answer 6

“To Deliver”
“To Contain”

Question 7

An Analytical balance with a maximum capacity ranging between 160 and 200g with a 0.1mg Tolerance

Answer 7

Macrobalance

Question 8

An Analytical Balance with a capacity of 10 - 30 g with a 0.01mg tolerance

Answer 8

Semimicroanalytical Balance

Question 9

An Analytical Balance with a capacity of 1 - 3 g with a 0.001mg tolerance

Answer 9

Microanalytical Balance

Question 10

Have a max capacity of 150 - 200g with a precision of 1mg; used to weigh quantities up to 2 decimal places

Answer 10

Top Loading Balance

Question 11

Used to weight qunatities up to 4 decimal places

Answer 11

Analytical Balance

Question 12

Substance placed directly on a balance and the mass is read

Answer 12

Direct Weighing

Question 13

Where to read or measure the volume of a liquid?

Answer 13

Lower Meniscus

Question 14

Volumeteric equipment used to contain a specified amount of liquid; Denoted by TC

Answer 14

“To COntain”

Question 15

Volumetric Equipment used to deliver a specified amount of liquid; Denoted by TD

Answer 15

“To Deliver”

Question 16

Features a flat bottom to contain liquid or solid samples; Can be Heated; Used to catch filtrates from filtering operations

Answer 16

Beakers

Question 17

Have Wide bottom, conical bodies, and tall cylindrical necks for mixing, cooling, incubation, filtration, or storage; Can be Heated

Answer 17

Erlenmeyer Flask

Question 18

have a narrow cylindrical shape with markings along the cylinder that represents the amount of liquid being measured; Can not be Heated; Used to measure liquids

Answer 18

Graduated Cylinder

Question 19

used in preparation of solutions with accurate concentration; have long elongated and narrow necks that have a single etched ring graduation

Answer 19

Volumetric Flask

Question 19

graduated glass or plastic pipettes that are used to measure and dispense a specific volume of liquid

Answer 19

Serological Pipettes and Mohr Pipettes

Question 20

glass pipettes that are calibrated to accurately measure a fixed amount of liquid; Has a reservoir and single graduation mark

Answer 20

Volumetric Pipettes

Question 21

Used to draw liquids into the Pipette

Answer 21

Aspirator

Question 22

a graduated glass tube with a stopcock located at the bottom of the tube; used for titrations

Answer 22

Burette