PreAP Chem Unit 1 (Safety, Measurement Rules and Vocab,
Sig Figs, and Dimensional Analysis) Questions With
Complete Solutions
All floors and aisle should be kept clear of Correct Answers lab
equipment and chemicals
Always read and double check the label on a(n) __ bottle before
removing anything from it, and never __ unused material to the
bottle. Correct Answers reagent, return
Any activity that involves poisonous vapors must be carried out
in a(n) __ hood. Correct Answers fume
Any spill on the floor can cause an accident. Always clean it up
Correct Answers at once
avoid apparel that presents safety hazards such as ______
garments and _____ jewelry Correct Answers loose, dangling
Before you touch an electric plug, switch, or outlet Correct
Answers your hands should be dry
Carefully follow all __, both written and oral. Correct Answers
instructions
Chemicals, small parts, and stirring rods are not to be Correct
Answers put in your mouth
Disturbing other students while they are working in the
laboratory is Correct Answers dangerous
, Exposure to a gas, vapors or dust in the air would be an example
of which of the following? Correct Answers Inhalation
Helping to clean up the laboratory or classroom is the job of
Correct Answers each student
How would you protect yourself from accidentally ingesting
chemicals? Correct Answers Not eating or drinking in the
laboratory
Do not touch your face with your gloved hand
Remove gloves and wash hands prior to leaving the lab
If acid gets on your skin or clothes, wash at once with Correct
Answers water
If you are directed to mix an acid and water, always be sure to
add the __ to the __, never the reverse. Correct Answers acid,
water
If you are hurt (cut, burned, etc.) tell the Correct Answers
teacher at once
If you are not sure what to do Correct Answers ask the teacher
If you break a piece of glassware or other equipment, tell the
teacher Correct Answers at once
If you see a fire in an apparatus, or a burning liquid, it is best to
put it out with Correct Answers the fire extinguisher
Sig Figs, and Dimensional Analysis) Questions With
Complete Solutions
All floors and aisle should be kept clear of Correct Answers lab
equipment and chemicals
Always read and double check the label on a(n) __ bottle before
removing anything from it, and never __ unused material to the
bottle. Correct Answers reagent, return
Any activity that involves poisonous vapors must be carried out
in a(n) __ hood. Correct Answers fume
Any spill on the floor can cause an accident. Always clean it up
Correct Answers at once
avoid apparel that presents safety hazards such as ______
garments and _____ jewelry Correct Answers loose, dangling
Before you touch an electric plug, switch, or outlet Correct
Answers your hands should be dry
Carefully follow all __, both written and oral. Correct Answers
instructions
Chemicals, small parts, and stirring rods are not to be Correct
Answers put in your mouth
Disturbing other students while they are working in the
laboratory is Correct Answers dangerous
, Exposure to a gas, vapors or dust in the air would be an example
of which of the following? Correct Answers Inhalation
Helping to clean up the laboratory or classroom is the job of
Correct Answers each student
How would you protect yourself from accidentally ingesting
chemicals? Correct Answers Not eating or drinking in the
laboratory
Do not touch your face with your gloved hand
Remove gloves and wash hands prior to leaving the lab
If acid gets on your skin or clothes, wash at once with Correct
Answers water
If you are directed to mix an acid and water, always be sure to
add the __ to the __, never the reverse. Correct Answers acid,
water
If you are hurt (cut, burned, etc.) tell the Correct Answers
teacher at once
If you are not sure what to do Correct Answers ask the teacher
If you break a piece of glassware or other equipment, tell the
teacher Correct Answers at once
If you see a fire in an apparatus, or a burning liquid, it is best to
put it out with Correct Answers the fire extinguisher
