Safety Rules (Exercise 1)

Question 1

A student who splashes acid into his eyes should immediately go to the

Answer 1

Sink

Question 2

Always add acid to water while mixing continuously, never water to acid.

Answer 2

TRUE

Question 3

Neutralize acid by

Answer 3

sprinkling powdered sodium hydrogen carbonate (NaHCO 3 ) on it. When bubbling ceases, allow
the spillage to be absorbed by a dirty rag and air dry.

Question 4

Neutralize bases with

Answer 4

dilute acetic acid or

vinegar

Question 5

What to do if acid spill on skin

Answer 5

wash with

plenty of water.

Question 6

the proper way to mix an acid in water?

Answer 6

Add acid to water.

Question 7

Which of the following should be done if an acid accidentally spilled on your clothing?

A. Notify the instructor and immediately go to the eye wash station.
B. Remove contaminated clothing and immediately go to the safety shower.
C. Pour a base solution on your clothing to neutralize the acid.
D. Do nothing unless the spilled acid causes discomfort

Answer 7

B. Remove contaminated clothing and immediately go to the safety shower.

Question 8

Working with chemicals that have hazardous fume must be carried out in the

Answer 8

fume hood

Question 9

When opening a container with corks or rubber stoppers, how must these stoppers be laid on the table?

A. Lay them upside on the table.
B. Lay them on their sides.
C. Lay them with the bottom side on the table
D. Never lay them on the table, just hold them in between your fingers.

Answer 9

A. Lay them upside on the table.

Question 10

Which of the following IS NOT true when working with chemicals?

A. Withdraw only the exact amount of chemicals you need.
B. Return excess chemical to the reagent bottle.
C. Never leave reagent bottles on the working area.
D. Taste chemicals only when you’re directed to by your instructor.

Answer 10

B. Return excess chemical to the reagent bottle.

Question 11

One reason why we never insert a spatula into a reagent bottle is to

A. Prevent contamination.
B. Prevent the breakage of spatula.
C. Prevent corrosion to occur.
D. Prevent oneself from injury.

Answer 11

A. Prevent contamination.

Question 12

You have been injured in the laboratory. The first thing you should do is

A. tell the instructor
B. tell the dean
C. see a doctor after school
D. see the school nurse

Answer 12

A. tell the instructor

Question 13

How can a small contained fire be extinguished easily?

A. Use a fire extinguisher
B. Use water
C. Call the instructor
D. Smother the fire with a small container

Answer 13

D. Smother the fire with a small container

Question 14

To pick up tiny pieces of broken glass, use _____.

A. your hands
B. wet paper towel
C. broom &dust pan
D. tongs

Answer 14

C. broom &dust pan

Question 15

When chemicals get into your hands, which of the following will you do?

A. Move quickly to the sink and rinse the chemical off.
B. Move quickly to the safety shower and rinse the chemical off.
C. Wipe the chemical quickly on your laboratory gown.
D. Wipe the chemical quickly with your handkerchief or tissue paper.

Answer 15

A. Move quickly to the sink and rinse the chemical off.

Question 16

Describe the procedure used to operate a fire extinguisher. (hint: pass)

Answer 16

pull, aim, squeeze, sweep

Question 17

The immediate first aid for burns is

Answer 17

putting under cold water.

Question 18

If someone gets chemicals in his eyes, the minimum time spent to rinse the chemicals out is:

Answer 18

D.15 minutes

Question 19

Accidents even how minor it is must be reported to the instructor.

Answer 19

TRUE

Question 20

Always use a clean and dry spatula when transferring solid chemicals.

Answer 20

TRUE

Question 21

It is safe to heat the contents of test tubes in a flame while seated.

Answer 21

FALSE

Question 22

Mercury spill must be cleaned immediately using the broom and dust pan

Answer 22

FALSE