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Lab safety!. What do you do? How should you do it? What happens if you do it wrong?. What is the most important thing you should do to prepare for a lab? Why are appropriate clothing and shoes necessary for lab? What is the most important thing you should do if there’s an accident in lab?

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lab safety

Lab safety!

What do you do?

How should you do it?

What happens if you do it wrong?

lab safety1
What is the most important thing you should do to prepare for a lab?

Why are appropriate clothing and shoes necessary for lab?

What is the most important thing you should do if there’s an accident in lab?

What is the proper way to dispose of materials in lab?

Lab Safety
lab rules
LAB RULES
  • Laboratory rules MUST be followed at ALL times during lab activities.
  • Infractions could lead to a ZERO for the lab, or even injury.
  • See your lab safety contract.
  • Please do not miss a lab day if at all possible as lab make ups must be made up within three days. Or a alternative assignment may be given.
emergency procedure
Emergency procedure
  • Fire
  • Code Red
  • Tornado
station 1
STATION #1

Materials: graduated cylinder, pipette, stock solutions, beaker

You are testing with a reagent (chemical indicator) and need a solution of 5mL hydrochloric acid and10mL water.

List SAFE steps for mixing this solution.

station 11
Station #1
  • Use pipette to draw water, add to graduated cylinder to measure needed amount
  • Pour into mixing beaker
  • Then, draw HCl with a clean pipette, transfer to graduated cylinder to measure.
  • Add to beaker of water – do as you oughta’, add acid to wata’
station 2
Station #2

Materials: Erlenmeyer flask, unknown green solution

Describe proper & SAFE procedures for observing the solution.

Then, describe the best way to record the data. Last, describe how you might analyze the data?

station 3
Station #3

Materials: 50mL graduated cylinder, 250mL beaker, pipette, test tube

Given the materials at your table, describe which of the equipment you would use and the SAFE procedure for adding 50mL to the test tube?

station 4
Station #4

Materials: 50 mL graduated cylinder, 400mL beaker, test tube, test tube tongs, thermometer, hot plate, hot hands.

When heating glassware it gets hot!

Describe SAFEsteps for heating 30mL solutionto 60o Celsius. Include the proper handling of glassware before, during, and after heating

station 5
Station #5

Materials: salt, scoopula, 400 mL beaker, glass stirring rod

You are supposed to dissolve salt in 200mL of water. Describe how you would SAFELYdo it given the equipment at your table

station 51
Station #5
  • Measure amount of water you need in beaker
  • Use scoopulato scoop salt/solid
  • Stir with glass stirring rod (never a thermometer)
station 6
Station #6

Materials: unknown solid, scoopula, weigh boat, balance

You are supposed to test an unknown solid and need a 75g sample. Describe how you would SAFELYhandle andmeasure it given the equipment at your table.

station 61
Station #6
  • Place weigh boat on balanceplate and zero out/mass it
  • Do a little math: mass of boat + mass of sample wanted = total mass
  • move weights to total mass amount.
  • Scoop solid with scoopula. Empty into weigh boat until pointer zeroes out.

How to use a balance

slide17
totd
  • There are certain things you can do to be successful in lab, namely prepare accordingly. List some things you should do to prepare for lab.
  • Describe how you should dress for lab.
  • How should you handle an accident in lab?