Unit 1 - Laboratory Orientation

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Analytical Chemistry

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32 Terms

1

Analytical Chemistry

It is the science of obtaining, processing, and communicating information about the composition and structure of matter.

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2

Analytical Chemistry

It is the art of science of determining what matter is and how much of it exists.

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3

Qualitative Chemistry

It is the branch of chemistry dealing with the determination of elements or ingredients of which a compound or mixture is composed.

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4

Quantitative Chemistry

It is the branch of chemistry dealing with the determination with the amount or percentages of one or more constituents of a sample.

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5

Qualitative Chemistry

A process in analytical chemistry used to separate and detect cations and anions in a sample substance.

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6

Quantitative Chemistry

A process in analytical chemistry that involves measurement of results such as quantities of substances produced.

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7

Reaction

A change in which one or more chemical elements or compounds (the reactant) form new compounds (the products).

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8

to some extent

All reactions are, -- ---- ------, reversible.

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9

Reagent

It is a substance used in a chemical reaction to detect, measure, examine, or produce other substances.

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10

Precipitate

It is any insoluble substance that is produced after a certain reaction.

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11

Residue

It is a portion of a solid remaining after partial solution by a reagent.

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12

Residue

A quantity or body of matter remaining after evaporation, combustion, distillation, etc.

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13

Filtration

The act or process of filtering, especially the process of passing a liquid or gas, such as air, through a filter in order to remove solid particles.

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14

Test Solution

A solution of some reagent, in definite strength, used in chemical analysis or testing.

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15

Clear Solution

A solution that isn’t turbid or cloudy.

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16

Colorless Solution

A solution that is not colored.

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17

Test

It is a laboratory procedure designed to show the presence or absence of some substances.

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18

Positive Test

It is a type of test that indicates that the substance being found is present.

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19

Negative Test

This type of test indicates that the substance being found is absent.

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20

Blank Test

It is a test carried out under specified conditions with all reagents with exception of determined substances to account for consent of this substance in reagents used.

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21

Control Test

A blank test to which a known sample of the ion under consideration has been added.

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22

Specific Test

A test given by one and only substance.

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23

Centrifugation

A process that involves the use of the centrifugal force for the separation of mixtures, used in industry and in laboratory settings.

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24

Fume Hood

Reactions that involve the production of hazardous fumes are conducted in the ---- ----.

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25

zero

Before using the balance, the weight must always be ----.

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26

clean

When using the balance, the surface of the balance must always be kept -----.

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27

beaker

Instead of putting the substance directly on the balance pan, use a ------ or weighing boat instead.

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28

shaken

Laboratory thermometers are not to be ------.

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29

Mercury

It is the type of metal used inside a laboratory thermometer.

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30

away

When heating liquids in test tubes, always point the open end of the test tube ---- from yourself and/or anyone.

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31

Indicator Paper

It is used to determine the acidity of a solution.

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32

Flame Test

This test is used to visually determine the identity of an unknown metal or metalloid ion based on the characteristic color the salt turns the flame of a bunsen burner.

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