CHEM Saftey Final
At what concentration are acids considered to be corrosive?
1 M
What values are right as far as airflow velocity? (+/-20%)
100 ft/min
What is a hazard?
A possible source of danger or harm
In RAMP, the A stands for...
Assess
Safe and risky practices are examples of...
Behavior factors
What should one always do before using a hood?
Check for airflow
Which eye protection is the only kind acceptable in chemistry labs?
Chemical splash goggles
What class of fires does water work for?
Class A
Class C fires involve...
Energized electricity
Facilities, location, equipment, procedures, and standards are examples of...
Environmental factors
Class B fires involve...
Flammable liquids
Which chemical is the best to use as an oxidizing agent: Nitric acid, Cr(VI), or hydrogen peroxide
Hydrogen peroxide
Which are necessary for green chemistry to be successful? I. Economic viability II. Commitment of chemists and managers III. Passage of the Green Chemistry Act by Congress
I and II
The potential for injury from an acid depends on which of the following? I. The chemical structure of the acid II. The concentration of the acid in solution III. The are of exposure IV. The duration of the exposure V. The temperature of the solution
I, II, III, IV, and V
Corrrosives can be in which of the following forms? I. Liquids II. Solids III. Gases IV.
I, II, III, and IV
Of the following, which are the three most likely oxidizing agents to be used in an introductory chemistry experiment? I. Nitric acid II. Hydrogen peroxide III. Potassium permanganate IV. Chlorine
I, II, and III
Which of these can burn? I. Liquids II. Gases III. Solids
II
Which of the following are the three corrosive acids most likely to be encountered in introductory chemistry courses? I. Acetic acid. II. Sulfuric acid III. Hydrochloric acid IV. Nitric acid
II, III, and IV
Most fire prevention methods involve removing what part of the fire tetrahedron?
Ignition source
In RAMP, the M stands for...
Minimize
Are chemical hoods required by law in labs that use chemicals that could be harmful?
No
Do combustible chemicals burn more easily than flammable chemicals?
No
Should you try to remove an object that is impaled into someone's body?
No
Class A fires involve...
Ordinary flammables
Attitude, beliefs, personality, knowledge, skills, and abilities are examples of...
Person factors
In RAMP, the P stands for...
Prepare
What is the correct use of an extinguisher? Using the words: aim, pull, sweep and squeeze
Pull, aim, squeeze, and sweep
Class D fires involve...
Reactive metals
In RAMP, the R stands for...
Recognize
The ANSI Z87.1 standard ensure that eyewear protects against...
Shrapnel
The best extinguishing agent for a person on fire is...
Water
Does the score of 1 on the HC mean that the chemical is extremely flammable?
Yes
What is true? (a) The LEL is lower than UEL (b) The UEL is lower than LEL (c) The UEL and LEL are often the same value (d) The LEL and LFL are different numbers
a
What term describes a chemical that causes cancer in humans or animals? (a) Carcinogen (b) Embryotoxin (c) Lacrimator (d) Teratogen
a
Which acid is also a strong oxidizing agent? (a) Nitric acid (b) Sulfuric acid (c) Hydrochloric acid (d) All of the above
a
Which set of values best characterizes a flammable liquid? (a) Low BP, high vapor pressure, low flash point (b) Low BP, high vapor pressure, high flash point (c) Low BP, low vapor pressure, low flash point (d) High BP, low vapor pressure, low flash point
a
Flammable chemicals are most commonly found in which category of chemicals? (a) Organic solutes (b) Organic solvents (c) Inorganic solutes (d) Inorganic solvents
b
Liquid spills tend to be the most dangerous since (a) Solids are rarely flammable or toxic (b) Liquids spread more easily than solids (c) Almost all liquids are flammable (d) Solids can be present in a lab for days or weeks without any significant exposure hazard
b
Most adverse occupational exposures to chemical are through (a) Inhalation (b) Dermal exposure (c) Ingestion (d) The eyes
b
The autoignition temperature for most organic solvents is (a) Fairly large (b) The temperature at which a flammable chemical ignites spontatneously in air (c) The temperature at which the solvent burns im air automobile (d) both (a) and (b)
b
The best chemicals hoods (a) Are on at "full volume air" at all times to ensure max safety (b) Adjust the rate and flow to keep the lab environment safe while minimizing energy use (c) Have on/off switch so that air flow can be turned off when the hood is not being used (d) Automatically shut down if the air pressure in the hood gets too high
b
Using the GHS criteria, gasoline is characterized as (a) extremely flammable (b) highly flammable (c) flammable (d) combustible
b
What factor does not play an important a significant role in the extent of harm upon exposure to a chemical? (a) Dose (b) Length of exposure (c) State (d) Path of exposure
b
What term describes a chemical that is stored at extremely low temperatures? (a) Pyrophobic (b) Cryogen (c) Lacrimator (d) Compressed gas
b
Most chemicals (a) are not very hazardous (b) have only one hazardous property (c) have multiple hazards, but not all of them are listed on the label (d) have multiple hazards, with all of them listed on the label
c
Portable extingushers usually last for (a) 5-10 seconds (b) 10-30 seconds (c) 30 seconds to a few minutes (d) 5-10 minutes
c
Volatile chemicals are substances that (a) Are very reactive (b) Have a vapor pressure of at least 100 mm Hg (c) Are liquids that vaporise readily at normal pressure and temperature (d) Are gases at normal pressure and temperature
c
What term describes a chemical that causes tears upon exposure? (a) Pyrophobic (b) Embryotoxin (c) Lacrimator (d) Mutagen
c
Which base, at high concentration, will also have a corrosive gas associated with it? (a) NaOH (b) KOH (c) NH₄OH (d) LiOH
c
Which chemical is the least dangerous in lab with reagards to flammability? (a) Acetone (b) Ethanol (c) Dichloromethane (d) Butanol
c
Which statement is true with regard to the NFPA diamond? (a) Blue - 9 o'clock - special hazards (b) White - 6 o'clock - instability hazard (c) Red - 12 o'clock - flammability (d) Yellow - 3 o'clock - health hazard
c
Table 3.1.2.1 lists how many terms that describe hazards of chemicals? (a) 5-9 (b) 10-14 (c) 15-19 (d) 20-24
d
Which base is not likely to be used in an introductory chemistry course? (a) NaOH (b) KOH (c) NH₄OH (d) LiOH
d
