Mod 1 Lesson 4

Question 1

alkali

Answer 1

a basic chemical compound (pH > 7) that neutralizes with acids; typically caustic or corrosive substance (e.g., lime or soda)

Question 2

acid

Answer 2

a chemical compound with a pH < 7 that neutralizes with bases

Question 3

carcinogen

Answer 3

a cancer-causing agent

Question 4

chemical

Answer 4

a substance or mixture of substances found on the Periodic Table of Elements

Question 5

corrosive

Answer 5

any chemical that will damage or destroy another substance (e.g., strong acids, strong bases, and strong oxidizers)

Question 6

flash point

Answer 6

the lowest temperature at which a substance will vaporize and catch fire; the lower the flash point, the easier it is for a substance to ignite

Question 7

Globally Harmonized System (GHS)

Answer 7

a universally understood set of symbols for hazardous materials created by the United Nations in the 1990s

Question 8

National Fire Protection Association (NFPA)

Answer 8

an organization that provides codes, standards, research, training, and education for fire, electrical, and related hazards

Question 9

oxidizer

Answer 9

a chemical (oxidizing agent) that will take electrons away from another chemical; for example, NaOCl (bleach)

Question 10

OSHA permissible exposure limit (PEL)

Answer 10

a legal limit in the United States for exposure to a chemical substance in the air

Question 11

radioactive

Answer 11

the risk of going through radioactive decay, or spontaneously changing from an unstable substance into another

Question 12

safety data sheet (SDS)

Answer 12

a reference sheet that details the properties, various hazards, protective measures, and other safety precautions for a specific chemical substance or mixture