Topic 1 Assignment
Vocabulary:
Chemistry-The branch of science that deals with the identification of the substances of
which matter is composed
Caustic- Able to burn or corrode organic tissue by chemical action
Homogeneous- A substance that is uniform in composition is a definition of
homogeneous in Chemistry
Heterogeneous- In chemistry, a mixture is a material system made up of two or more
different substances, which are mixed but are not combined chemically
1. Complete Topic 1 Review p. 98 #1-5
Put Safety First Worksheet
Description
Symbol
Example
CO2 Canister
Compressed gas
Poisonous and infectious material causing immediate and serious toxic
effects
Carbon
Disulfide
Sugar
Poisonous and infectious material causing other toxic effects
Nitric acid
Oxidizing material
Flammable and combustible material
Alcoholic
Substance
Bromine
Corrosive material
Biohazardous infectious material
Sharing
needles
Oxygen
Dangerously reactive material
Questions
1. Which WHMIS symbols do you think you might see on materials in this unit?
Compressed gas, Poisonous, Toxic, Oxidizing, Flammable, Corrosive
2. List the safety symbols displayed in investigations and activities in this unit
3. Why is it important for you to recognize safety symbols?
So you don’t get sick/Hurt
Using Material Safety Data Sheets
Questions
1. Write the name and formula of the chemical.
Name: Ethanol
Formula: C2H6O
2. How many sections is an MSDS divided into? 16
3. Name the titles of these section
1: Product and Company Identification
2: hazards Identification
3: Composition/Info on ingredients
4: First Aid Measures
5: Fire-fighting Mesure
6:Accidental Release Mesures
7: Handling and Storage
8: Exposure Control
9:Physical and Chemical Properties
10: Stability and reactivity
11:Toxicological Info
12: Ecological Info
13:Disposible Considerations
14: Transport Info
15:Regulatory Info
16: Other Info
4. Record the values from the MSDS for the following physical properties of this
substance (be sure to include the proper units):
(a) Melting point
114 °C
(b) Boiling point
78.37 °C
(c) Vapor point
3-4
(d) Solubility in water
Negligible
5. Does the MSDS indicate any special fire instructions or explosion hazard? If so,
describe them.
Have Carbon dioxide blanket, Water spray, Dry chemical, Foam Present.
Use NIOSH/MSHA approved positive pressure self-contained breathing apparatus
and fully protective clothing such as bunker gear if needed to prevent exposure.
6. Describe two important health hazards associated with this substance.
Irritating to skin and Eyes
7. If you get this substance in your eye, what first aid should be administered?
Ensure that eyewash stations and safety showers are close to the workstation
location.
8. What skin protection should be used when handling this substance?
If needed to prevent skin contact, chemical protective clothing such as of DuPont
TyChem®, Saranex or equivalent recommended based on degree of exposure. The
resistance of specific material may vary from product to product as well as with
degree of exposure.
9. How should spills be handled?
Dispose of contents/containers to approved disposal site in accordance with local,
regional, national, and/or international regulations.
Evacuate personnel to safe areas. Ventilate the area. Remove all sources of
Ignition. Response and clean-up crews must be properly trained and must utilize
proper protective equipment
10. How can this substance be disposed of safely?
Dispose of contents/containers to approved disposal site in accordance with local,
regional, national, and/or international regulations.
11. Describe any special storage or handling precautions.
Keep away from fire, sparks and heated surfaces. No smoking near areas where
material is stored or handled. The product should only be stored and handled in areas
with intrinsically safe electrical classification.
12. Where can the MSDS be found in your school?
In a Binder in the science lab
H20(l)+NaOH9(s)NaOH(aq)+heat
NaOH(aq)+NH4CI(aq)NaCI(aq)+NH4OH(aq)
l: liquid
s: Solid
Aq: aqueous: Substance dissolved in solid