Materials

Flammable reagents should never be handled near __________.

open flames

An example of a flammable reagents are __________. (hpaeabtcd)

1. hexane

2. petroleum ether (petroleum benzene, ligroin or light petroleum)

3. alcohols

4. ethyl acetate

5. acetone

6. benzene

7. toluene

8. carbon disulfide

9. diethyl ether

Explosive reagents should never be handled with __________.

water.

Explosive reagents should be stored in __________. Use _________ instead of bare hands when handling.

Kerosene or mineral oil, forceps

An example of explosive reagents are? (sp)

1. Sodium metal

2. Potassium metal or other group IA metals

White phosphorus must be stored in __________.

water

Chlorocarbons (CCl4 and CHCl3) are known to be __________.

liver carcinogens.

Carbon disulfide burns easily at temperatures below __________.

100ºC.

Strong oxidizing agents should never contact __________ materials.

organic

Example of strong oxidizing agents are? (nshp)

1. Nitric acid

2. Sulfuric acid

3. Hydrogen peroxide

4. Potassium permanganate

Industrial gloves should be used when handling __________ agents.

corrosive

An example of a corrosive agent are? (sshspanbct)

1. Sulfuric acid

2. sodium and potassium hydroxide

3. hydrochloric acid

4. sodium carbonate

5. phosphoric acid

6. ammonia

7. nitric acid

8. bromine

9. carboxylic and sulfonic acids

10. thionyl chloride

    
    

Harmful and toxic reagents, and cancer suspect reagents should be handled under a __________.

fume hood.

Harmful and toxic reagents are? (ambnbpcphsde)

1. aniline

2. methanol

3. benzene

4. nitrobenzene

5. bromine

6. phenol

7. carbon tetrachloride

8. phenylhydrazine

9. hydrogen sulfide

10. sodium and potassium cyanide

11. dimethyl sulfate

12. elementary mercury

Cancer suspect reagents are? (dpfcbc)

1. dimethyl sulfate

2. phenylhydrazine

3. formaldehyde

4. carbon tetrachloride

5. benzene

6. chloroform

Solutions of cyanides must never come in contact with acids because _______ will be liberated

toxic HCN

Skin staining substances should be handled with __________.

gloves.

Skin staining substances are? (pmm)

1. picric acid

2. methyl violet

3. malachite green and other dyestuffs

Elemental and soluble mercury compounds should never be disposed of in the __________and should be disposed in a ________

sink, separate white container

Do not work near flame or hot plates with highly __________ chemicals and have low _________.

volatile, flash point

Highly volatile w/ low flash point chemicals? (dcc)

1. diethyl ether

2. carbon disulfide

3. chloroform

Always ensure reagent caps are __________ after use.

tightly screwed.

Alkali solutions must not be stored in __________ containers. as leaching or freezing may occur. Use stopper made of ________ instead of rubber

glass, cork

Light-sensitive solutions should be stored in __________-colored bottles.

amber.

Light sensitive solutions are? (piofssc)

1. potassium permanganate

2. iodine

3. oxalic acid

4. ferrous and ferric salts

5. sodium thiosulfate

6. silver nitrate

7. ceric sulfate
   

Solutions of ferrous salts must remain __________ to prevent oxidation. Rate of oxidation raises as pH solution does

acidic.

Chlorine and bromine water should be stored in __________ bottles.

amber

When disposing of chemicals, do not dispose organic solvents in the __________.

sink.

Unreacted sodium or potassium metal must be reacted with __________ before disposal.

excess ethanol.

Neutralize spills of acids and bases with __________.

sodium bisulfate

Halogenated compounds include __________. (cbcc)

1. Chloroform

2. Carbon tetrachloride

3. Benzyl chloride

4. Chlorobenzene

Nonhalogenated compounds include __________. (ebeh)

1. Ethyl acetate

2. Benzene

3. Ethanol and methanol

4. Hexane

Metal residues, such as __________, must be disposed of properly. (mmmz)

1. mercury

2. metal and its salts

3. magnesium

4. zinc dust

Carry large bottles of chemicals with __________, one on the ________ and one on the _______

both hands, neck, bottom of container

Never use an __________ chemical.

unlabeled.

Avoid pointing test tubes at others while the contents are __________.

boiling

Never mix strong oxidizing agents w/ reducing agents without __________.

instructions

Prepare solutions in __________ quantities when needed.

small

Fresh preparation of solutions is crucial for __________ and _____ solutions.

ferrous, ferric

Never perform a ________ test unless instructed by teacher

taste

Unreacted white phosphorous must first be oxidized to phosphate ions via _______ prior to
disposal.

nitric acid

attend to _____ immediately

spills

in case of ___________, notify teacher to prevent spread of pathogens

microbiologic cultures

neutral solvents can be absorbed by __________ or ________

sand, paper towel

If spilled liquid is ____________, clear area, extinguish burners and let it evaporate

volatile