1. Always read( _ ) _ _ _ _ _ on chemicals very cafefully.
2. When doing experiments, follow the _ _( _ )_ _ _ _ _ _ _given in your textbook and by your teacher.
3. When working with chemicals that give off fumes(gases), be sure to keep the room well _(_) _ _ _ _ _ _ _ _ _.
4. Never combine chemicals unless you know what reaction to expect, as some combinations can produce deadly fumes or violent e_ _ _ _ _ _ _(_).
5. Screw caps on bottles t_ _ _ _ _ (_) to prevent spilling and evaporation, and store the chemicals according to insructions-in a locked cabinet.
6. Since some substances are harmful when absorbed through the (_) _ _ _, be sure to wash your hands thoroughly after experimenting with chemicals.
7. Don't pour chemicals into the _(_)_ _ unless you know that they will do no harm to the plumbing.
8. Never put any compounds you mix into your _ _ _(_)_, as even a tiny taste of certain substances can be quite harmful.
9. When you transfer a chemical from one container into another, be sure to _ (_)_ _ _ _the label so no one else will use the wrong item by mistake.
10. Don't let your caution stop when you leave the laboratory at school. Many common substances around the house can do harm if not used propersly. Take precautions when using (_)_ _ _ killers and insecticides in your garden, cleaning fluids, prescription medicines, and so on.
11. When diluting acid, always add acid slowly to _ _ _ _ _
12. Always wear safety _ _ _ _ _ _ _ over your eyes when working in the lab.
Chemical Safety
Chemicals can be of great benefit to all of us in our homes, schools, and work if they are used properly and carefully. If they are handled unsafely, however, they can cause great damage to people, animals, and property. We must learn to use chemicals safely.
DIRECTIONS: Read each of the following statements carefully, and write the letter of the best answer in the blank of the statement.
A. carbon monoxide
B. chemicals
C. protective mask
D. thrown away
E. toxicology
F. diluted
G. induce vomiting
H. air pollution
I. vapors
J. wash
K. tightly closed
L. ventilation
M. location
1.The study of the actions of poisons on living organisms is called?__________
2. Many chemicals give off dangerous fumes or ______.
3. All chemicals should be stored in ________ containers.
4. You can avoid inhailing poison chemical vapors by wearing a ______________.
5. If you spill chemicals on your skin you should immediately ____ the area with large amounts of water.
6. Chemicals are less dangerous if they have been ______.
7. You should never use chemicals in a room with poor ___.
8. Poison chemicals form a major percentage of __________.
9. Automobile fumes contain a poison chemical called ____.
10. Unlabeled chemicals should be diluted and ___________.
11. If a person accidentally swollows a dangerous chemical you should try to ______________.
12. You should never mix ________unless you know what the resulting solution will be.
13. You must know the ________ of all the safety equipment in the classroom.
DIRECTIONS: Underline the correct answer.
1. Chemical poisoning may occur by (a)ingestion (b)inhalation (c)absorption through the skin (d)all of these ways.
2. After you finish working with chemicals, you should always (a)stay away from people for 2 hours (b)wash thoroughly (c) drink a large amount of water.
3. After you have administered first aid to a victim of poisoning, you should (a)send him home (b)send him to a doctor (c)make him eat a large meal.
4. Some chemicals may explode when (a)exposed to air (b)exposed to heat (c)mixed with other chemicals (d)exposed to any of these situations.
5. Unsafe handling of chemicals can lead to (a)severe burns (b)permanant disability (c)death (d)all of these.