1. Safety & MSDS & Equipment
Process skills: C.1A demonstrate safe practices during laboratory and field investigation; C.1B know specific hazards of chemical substances

2. Safety Rules Read lab and be familiar with safety issues.
Tie back long hair, roll up sleeves, wear closed toe shoes, and put on goggles and apron.
Never eat, drink, or apply make-up in lab.
Do not use burners near flammable materials.
Always point test tube away from you and others when heating chemicals.
Never directly inhale a gas or vapor.
Always add acids or bases to water when making dilutions. (A&W rootbeer)
Never use electrical equipment near water.
Report accidents to your teacher ASAP.
Wear a hat, long sleeves, and closed-toed shoes during field investigations.

3. SAFETY- Vocabulary Carcinogen – causes cancer
Corrosive – gradually destructive
Ventilation – circulate fresh air
Irritant – causes redness & itching, burning & is harmful
Oxidizer – combines with oxygen and burns
Toxic – poisonous
Flammable – possible to burn
Fumes – vapor, gas, or smoke that can be harmful
Radioactive – damages tissues by removing electrons or breaking bonds

4. Chemical Symbols Chemical Safety Symbols Flammable Corrosive
Environmental Hazard
Poisonous
Radioactive

5. MSDS There is an MSDS sheet for every chemical which gives:
Physical data: density, solubility, pH, etc.
Appearance and odor
Reactivity
Health hazards
Special precautions: gloves & goggles
First aid

6. NFPA Diamond Used to identify hazards using graphic representation
Used on chemical labels, buildings and transports

8. Laboratory Equipment
Equipment Purpose_____ ____________________________ Beaker measures liquid volume in a wide mouth container Burette dispenses precise liquid amounts via a vertical tube Electric Balance measures mass; can “tare” (rezero) Erlenmeyer Flask holds liquids; conical base and cylindrical neck allow liquids to be stoppered or swirled Graduated Cylinder measures liquid’s volume; more precise than beakers Pipette transfers small liquid amounts using a thin tube Test Tube holds chemicals; glass tube with one open end Thermometer measures the temperature (kinetic energy) of substance (C or K) Volumetric Flask holds liquids; provides a precise measurement of a single volume (L or mL) Match Pictures with Equipment Name:

9. 1. All of these procedures must be
followed when using the setup shown
above except —
a. putting on safety goggles
b. handling the beaker with tongs
c. securing loose clothing
d. wearing rubber gloves

10. 1. All of these procedures must be followed when using the setup shown above except —
d. wearing rubber gloves

11. 2. A science class is conducting an experiment that produces noxious fumes. Because of inadequate ventilation, some students begin to feel nauseated and dizzy. The first response should be to —
A neutralize the acid that is reacting to produce the noxious fumes
B carry the reactants outside, away from other students
C leave the room and go to an area with fresh air
D spray the reaction with a fire extinguisher

12. 2. A science class is conducting an experiment that produces noxious fumes. Because of inadequate ventilation, some students begin to feel nauseated and dizzy. The first response should be to —
C leave the room and go to an area with fresh air

13. 3. An experiment requires the use of a lab apron, goggles, and insulated mitts or beaker tongs. The purpose of these safety items is primarily to protect against —
a. release of hazardous gases
b. contamination of chemicals and glassware
c. hot materials and spills of harmful liquids
d. staining of lab clothing

14. 3. An experiment requires the use of a lab apron, goggles, and insulated mitts or beaker tongs. The purpose of these safety items is primarily to protect against —
c. hot materials and spills of harmful liquids

15. 4. Which of the following is the proper method to dispose of a solid produced during a chemical reaction?
a. Wrap the solid in paper, seal it in a bag, and throw it in the trash
b. Place the solid in the designated container for solid waste
c. Dissolve the solid in a solvent and pour the solution down the drain
d. Carry out a reaction that will convert the solid into a gas under a fume hood

16. 4. Which of the following is the proper method to dispose of a solid produced during a chemical reaction?
b. Place the solid in the designated container for solid waste

17. 5. Which of these is the best reason to not eat or drink while in the laboratory?
a. Particles of food can contaminate chemical reagents.
c. Some foods produce toxic gases when mixed with acids.
b. Spilled drinks can make cleanup of
chemicals difficult.
d. Chemicals spilled on hands can be
transferred to food.

18. 5. Which of these is the best reason to not eat or drink while in the laboratory?
d. Chemicals spilled on hands can be transferred to food.

19. assist their lab partner
6. The anatomy of grasshoppers is being studied in a dissection lab. Working in groups of three, students make observations using a hand lens, forceps, and a scalpel. Two of the students in a group have finished their observations. These two students may do all of the following except —
remove their goggles
review their notes
wash their hands
assist their lab partner
[Default]
[MC Any]
[MC All]

20. 6. The anatomy of grasshoppers is being studied in a dissection lab
6. The anatomy of grasshoppers is being studied in a dissection lab. Working in groups of three, students make observations using a hand lens, forceps, and a scalpel. Two of the students in a group have finished their observations. These two students may do all of the following except —
remove their goggles
[Default]
[MC Any]
[MC All]

21. 7. This picture indicates that the chemical represented is —
Pressurized
Corrosive
Flammable
Toxic

22. 7. This picture indicates that the chemical represented is —
B. Corrosive

23. 8. A science class is conducting an experiment that produces noxious fumes. Because of inadequate ventilation, some students begin to feel nauseated and dizzy. The first response should be to —
neutralize the acid that is reacting to produce the noxious fumes
carry the reactants outside, away from other students
leave the room and go to an area with fresh air
spray the reaction with a fire extinguisher

24. 8. A science class is conducting an experiment that produces noxious fumes. Because of inadequate ventilation, some students begin to feel nauseated and dizzy. The first response should be to —
C. leave the room and go to an area with fresh air

25. 9. Reactions that produce toxic gases should be performed in a —
laboratory fume hood
beaker with a watch glass on top
well-ventilated area of the lab
warm, airtight drying oven

26. 9. Reactions that produce toxic gases should be performed in a —
laboratory fume hood

27. 10. The label shown above contains information about some harmful effects of acetone. A group of students plans to use acetone to rinse out a glass container. A second group of students is working at the same lab table. Which of the following lab procedures should the second group of students avoid?
Heating water with an open flame
Pouring hydrochloric acid into a beaker
Filtering precipitates from a liquid solution
Collecting oxygen from plants in a test tube

28. 10. The label shown above contains information about some harmful effects of acetone. A group of students plans to use acetone to rinse out a glass container. A second group of students is working at the same lab table. Which of the following lab procedures should the second group of students avoid?
Heating water with an open flame

29. 11. For safety reasons, which of these labels is the most important to have on a reagent bottle?

30. 11. For safety reasons, which of these labels is the most important to have on a reagent bottle?

31. 13. Classification symbols for certain fire extinguishers are shown below. Which class of fire extinguisher should be used when a hot plate overheats and catches on fire? A B C D

32. 13. Classification symbols for certain fire extinguishers are shown below. Which class of fire extinguisher should be used when a hot plate overheats and catches on fire? B