CHEM 120L Exam Notes
SAFETY General WHMIS beforehand – no messing around on anything, no food/drink anywhere PPE – goggles, coat, feet
Treatment Skin Chem: emergency shower – TA/HS Eye Chem: eye wash – 10 mins. TA/HS
Fire Emergency kill switch for gas, electricity and water – leave and set the alarm Stop drop and roll Apparati should be clear of any controls or switches, keep vapours to minimum/take need
Extinguishers – on the wall inside each 1st year lab Class A - ordinary combustibles (paper, wood, plastics) Class B – flammable liquids (gas, oil, etc.) Class C – electrical equipment (wiring, outlets, appliances) PASS – Pull pin, Aim low, Squeeze handle, Sweep slowly and across base
Chemicals MSDS – know BP, flashing point, VPressure, toxicity, incompatibilites, explosive limits Danger Vapours – in the fume hood Waft when necessary – use rubber bulb with pipette Don’t take excess – dispose in bucket allocated Clean up mercury immediately, don’t use unlabeled, neutralize A or B,
Glass Names of glassware – know them, don’t use broken or chipped, sweep up broken
Erlenmeyer or thin-walled/flat bottom flasks are not safe with vacuum, carry all vertically
Place rollable glassware at 90 degree to edge of surface
Clean everything before you use it (emptied and rinsed and dried)
Syringes or propipettes used for corrosive or toxic materials EXPERIMENT ONE Need to Know
Know the reaction equations, which reactions occur (ex. by heating, etc.) and physical descriptions/color of tings
Ex. CuO (s) (black solid) + H2SO4 (aq) + H2O --> Cu(SO)4 (aq) (blue solution) + H2O
Know how to calculate percent yield (i.e. CuSO4 was obtained from the reaction of CuO with sulfuric acid. If 2.5 g of CuSO4 was obtained from 5.0 g of CuO, what is the percent yield?) Purpose
To observe the chemical properties of copper through a series of reactions
To recover the original mass of solid copper by synthesizing different
Treatment Skin Chem: emergency shower – TA/HS Eye Chem: eye wash – 10 mins. TA/HS
Fire Emergency kill switch for gas, electricity and water – leave and set the alarm Stop drop and roll Apparati should be clear of any controls or switches, keep vapours to minimum/take need
Extinguishers – on the wall inside each 1st year lab Class A - ordinary combustibles (paper, wood, plastics) Class B – flammable liquids (gas, oil, etc.) Class C – electrical equipment (wiring, outlets, appliances) PASS – Pull pin, Aim low, Squeeze handle, Sweep slowly and across base
Chemicals MSDS – know BP, flashing point, VPressure, toxicity, incompatibilites, explosive limits Danger Vapours – in the fume hood Waft when necessary – use rubber bulb with pipette Don’t take excess – dispose in bucket allocated Clean up mercury immediately, don’t use unlabeled, neutralize A or B,
Glass Names of glassware – know them, don’t use broken or chipped, sweep up broken
Erlenmeyer or thin-walled/flat bottom flasks are not safe with vacuum, carry all vertically
Place rollable glassware at 90 degree to edge of surface
Clean everything before you use it (emptied and rinsed and dried)
Syringes or propipettes used for corrosive or toxic materials EXPERIMENT ONE Need to Know
Know the reaction equations, which reactions occur (ex. by heating, etc.) and physical descriptions/color of tings
Ex. CuO (s) (black solid) + H2SO4 (aq) + H2O --> Cu(SO)4 (aq) (blue solution) + H2O
Know how to calculate percent yield (i.e. CuSO4 was obtained from the reaction of CuO with sulfuric acid. If 2.5 g of CuSO4 was obtained from 5.0 g of CuO, what is the percent yield?) Purpose
To observe the chemical properties of copper through a series of reactions
To recover the original mass of solid copper by synthesizing different