1. Double Replacement Lab
Safety review, MSDS, Instructions

2. About the lab… Hazard v Risk – Risk Assessment Types of hazards
Lab language - how we inform you about hazards
Labels, MSDS, GHS, NEPA Diamond
Some potential exposures:
How to prevent impact of a hazard
Know the Policies
Read Labels and MSDS
PPE
Proper Housekeeping and Disposal
Exposure
Prevention
Remediation
Ingestion
No food/drink in lab
Hands away from face
Poison Control
Hospital
Eye
Safety Glasses On Always
Eye Wash Station
Skin
Appropriate Clothing/Shoes
Safety Shower
Burns
Understand Flash Points and Reactivity
Appropriate Bunson Burner Use
Fire Extinguisher
Trip to the Hospital
Explosion
Proper Handling of Gas Cylinders
This is not a fully comprehensive list – go to slide 19 and click on the link for the ACS Secondary School Lab safety

3. Hazard and Risk Risk Assessment = Hazard (source) x Risk (prob)
Explosive
Flammable
Corrosive
Oxidizer
Compressed Gas
Toxic Substance
Irritant
Health Hazard
Environmental Hazard

4. National Fire Protection Association Hazard Identification System

5. NOT in ProgarChem Lab Cell Phones
Cell phones may be out, but must be SCREEN DOWN. No phone calls or texts or surfing.
You may listen to music during individual or group work. No texting apps or phone calls. One warning – second time I take the phone to be returned end of class.
Having anything other than your notebook & unit packet out.
Completing work for other classes.

6. Health and Reactivity Risks

7. Lab Execution Instructions
There will be 7 Lab teams. I will read you your team assignment. Pick a partner.
Put your safety glasses and lab aprons on before entering the lab
Take a PEN, lab sheet with you to the lab
Execute the lab:
Put a transparency sheet on top of the lab sheet side 1.
Obtain the first two chemicals at the first intersection eg AgNO3 and Na2CO3. Place 2 drops of Na2CO3 on to the transparency where it says Observation. Document the observation on your lab sheet. Complete all of the reactions using Na2CO3 and then move to the next solution, continuing to document your observations.
After you have completed the first side of the sheet. Pull the white sheet out from underneath so you can see the reactions that you might have missed due to the white color of the sheet behind the transparence. Any you may have missed will be easier to see against the black benchtop.
Rinse the transparency off into the sink.
Begin again on side 2 and repeat 1-4
Now identify the substances you have created by formula and name on your lab sheet.
Turn in your lab sheet
Dry any water left on your lab bench and return to your seat.