Chapter 2

Question 1

6 typical pipette

Answer 1

1. Volumetric/Transfer pippete
2. Mohr pipet
3. Serological pipet
4. Eppendorf micropipet
5. Ostwald-Follin pipet
6. Lambda pipet

Question 2

It transfer accurate known volume from one container to another

Answer 2

Pipet

Question 3

Calibrated to contain a specific volume

Answer 3

Volumetric flask

Question 4

2 Calibrated to deliver specific volume

Answer 4

1. Pipet
2. Buret

Question 5

It referred to a standard temp.

Answer 5

Volumetric measurement

Question 6

One time the filtering medium of choice

Answer 6

Abestos

Question 7

Process in which a solid moves up to the side of a wetted container

Answer 7

Creeping

Question 8

Steps in Filtering an analytical precipitate

Answer 8

1. DECANTATION
2. WASHING
3. TRANSFER

Question 9

Microliter

Answer 9

10 -6L / 10 -3 mL

Question 10

Unit of volume

Answer 10

Liter

Question 11

Capable of maintaining controlled temperature 1100*C & up

Answer 11

Muffle Furnace

Question 12

Used when filtering crucible instead of using paper

Answer 12

Vacuum Filtration Train

Question 13

Cause an object to float in air

Answer 13

Levitate

Question 14

Mass of an empty sample container

Answer 14

Tare

Question 15

Weighing error that develops when the object being weigh fas different density than the mass

Answer 15

Bouyancy error

Question 16

It makes possible to read scale to the nearest 0.1mg

Answer 16

Vernier

Question 17

Causes the display to read zero with a container on the pan

Answer 17

Taring Control

Question 18

Small Transparent Screen mounted on the beam. Reads 0 to 100 mg

Answer 18

Reticle

Question 19

Convenient for drying and storing solid

Answer 19

Weighing bottles

Question 20

Process in which a solid si cycled through heating

Answer 20

Drying

Question 21

Device for drying substances or object

Answer 21

Desiccator

Question 22

Most common ways of removing moisture from solids

Answer 22

Oven Drying

Question 23

Device in which a small electric signal causes a mechanical system to return to a null position

Answer 23

Servo System

Question 24

Process of oxidation of the organic constituent of a sample with oxidizing agent, such as nitric, sulfuric acid

Answer 24

Wet Ashing

Question 25

Sudden, Violent boiling that tends to spatter solution out of its container

Answer 25

Bumping

Question 26

Instrument for determining mass

Answer 26

Analytical balance

Question 27

Appeared1946 in market.
Currently replaced by electronic analytical balance

Answer 27

Single-pan analytical balance

Question 28

• Most common analytical balance
• Capacity between 160-200g
• 0.1 mg ; 0.0001g

Answer 28

Macrobalance

Question 29

• Maximum loading of 10-30g
• 0.01mg ; 0.00001g

Answer 29

Semimicroanalytical

Question 30

• Capacity of 1-3g
• 0.001 mg ; 0.000001g

Answer 30

Microanalytical

Question 31

Measured fraction of the volume of a liquid sample

Answer 31

Aliquot

Question 32

Precision is substantially grater than pipet
Delivers any volume up to the maximum capacity

Answer 32

Buret

Question 33

Capacities ranging from 5mL to 5L

Answer 33

Volumetric Flask

Question 34

Causes the volumetric to break

Answer 34

Dirt/Oil

Question 35

Curved Surface of a liquid at its interface with the atmosphere

Answer 35

Meniscus

Question 36

Condition that causes the volume to appear smaller than its actual value

Answer 36

Parallex

Question 37

True or False:
parallax is viewed from a position that is not a right angle to the object

Answer 37

True

Question 38

True or False:
Buret readings should be estimated to the nearest 0.1 mL.

Answer 38

FALSE
Correct answer: 0.01mL