ANA LAB

Question 1

most probable value, more reliable than any value in the set

Answer 1

Central value

Question 2

measure of the spread of the values in the set

Answer 2

Dispersion

Question 3

Measures the agreement between a result and the accepted value

Answer 3

Accuracy

Question 4

The closeness of results that have been obtained in exactly the same way

Answer 4

Precision

Question 5

Determinable and that presumably can either be avoided or corrected

Answer 5

Systematic errors

Question 6

caused by non-ideal instrument behavior, by faulty calibrations, or by use under inappropriate conditions

Answer 6

Instrumental error

Question 7

result from the CARELESSNESS, INATTENTION or personal limitations of the analyst

Answer 7

Personal error

Question 8

arise from non-ideal chemical or physical behavior of analytical system

Answer 8

Method errors

Question 9

The source of a random error cannot be pinpointed.

Answer 9

Random errors

Question 10

Occur occasionally, are often large, and may cause a result to either high or low.

Answer 10

Gross error

Question 11

A measurement data that appears to be inconsistent with the others in a set of data

Answer 11

Ouliers

Question 12

potential source of danger or harm

Answer 12

Hazard

Question 13

Chemicals that are easily ignited and burns very rapidly, releasing large amount

Answer 13

Flammable chemicals

Question 14

chemicals that rapidly bring about an oxidation reaction by supplying oxygen or receiving electrons during oxidation.

Answer 14

Oxidizing agents

Question 15

Chemicals that cause adverse health effects in humans or animals upon exposure.

Answer 15

Toxic chemicals

Question 16

Established to standardize the criteria for hazards of chemicals.

Answer 16

Globally harmonized system of classifying and labelig chemicals

Question 17

Ghs hazards statements

Answer 17

H2xx – Physical Hazard
H3xx – Health Hazard
H4xx – Environmental Hazard

Question 18

probability of suffering harm from being exposed to a hazard or unsafe condition

Answer 18

Risks

Question 19

coming in direct contact with a hazard or chemical in a fashion that can injure or harm

Answer 19

Exposure

Question 20

Class A

Answer 20

Waste with cyanade

Question 21

Class B

Answer 21

Acid wastes

Question 22

Class C

Answer 22

Alkali waste

Question 23

Class G

Answer 23

Organic waste

Question 24

Class D

Answer 24

Waste with inorganic waste

Question 25

it is from large container bottles

Answer 25

Stock solution

Question 26

Repacked solution

Answer 26

Working solution

Question 27

2 types of volumetric equipment

Answer 27

1. To contain 2. To deliver

Question 28

Examples of to contain volumetric equipments

Answer 28

Beakers, erlenmeyer flasks, volumetric flasks

Question 29

Example of to deliver volumetric equipments

Answer 29

Pipet and burette

Question 30

Volumetric equipment designed to contain a specified amount of liquid

Answer 30

To contain

Question 31

Volumetric equipment designed to deliver a specified amount of liquid

Answer 31

To deliever

Question 32

Closeness of SET of data points to one another

Answer 32

Precision

Question 33

The individual data is close with each other

Answer 33

Precision

Question 34

The closeness to the actual data (true value)

Answer 34

Accuracy

Question 35

used as a reaction container or to hold liquid or solid samples

Answer 35

Beaker

Question 36

slanted sides and narrow necks allow the contents to be mixed without the risk of spills

Answer 36

Erlenmeyer flask

Question 37

useful in titration and for boiling liquids

Answer 37

Erlenmeyer flask

Question 38

have a narrow cylindrical shape with markings along the cylinder that represents the amount of liquid being measured

Answer 38

Graduated cylinder

Question 39

used in preparation of solutions with accurate concentration

Answer 39

Volumetric flask

Question 40

have long elongated and narrow neck that have a single etched ring graduation mark that indicates the volume contained when the flask is filled to that point

Answer 40

Volumetric flask

Question 41

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

Answer 41

Serological pipette

Question 42

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

Answer 42

Mohr pipettes

Question 43

the pipet has a reservoir between two elongated sections and a single graduation mark

Answer 43

Volumetric pipette

Question 44

graduated glass tube with a stopcock located at the bottom of the tube

Answer 44

Burette

Question 45

used to draw liquids into the pipette

Answer 45

Aspirator