Download - Chem tutorial shives
Overview
• It is very important that you know what you are doing in chemistry lab.
• Learning the info in this tutorial will save you a lot of time and help you stay safe
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Types of Chemicals
• Solid
• Measured in mg or g
• Often crystals
• Remove from container with designated spatula only
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Types of Chemicals
• Liquid
• Measured in mL
• Carefully pour into glassware
• Examples
• 0.1 M solution
• 70% solution
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Types of Chemicals
• Gas
• Not usually stored in lab
• O2 in air often a reactant
• NH3 or H2 can be products of reactions
• NH3 detected by smell
• H2 detected by lighting a match
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Lab protocol
• Never sniff chemicals
• Waft using your hand
• Never put chemicals back into storage jar
• Discard any used chemical in proper receptacle
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Lab protocol
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• How to read a graduated cylinder
• Get at eye level with top of liquid
• Look at bottom of the meniscus
• See what line it falls on
• This one is 47 mL
Lab protocol
• Come prepared for lab
• Read lab ahead of time
• Review this tutorial
• Dress appropriately
• Write in notebook often
• Record all weights & measures
• Make observations
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Lab protocol• You cannot leave lab until
• All pertinent data has been collected
• Chemicals disposed of properly
• Glassware cleaned and placed on paper towel to dry
• Equipment cleaned and put away
• Lab bench wiped off
• Hands washed
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Emergency procedures
• In case of fire • Carefully back away
• Alert teacher to get fire extinguisher
• Prepare to leave building if necessary
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Emergency procedures
• In case of spill
• Contain with paper towels
• Wash off chemical from skin and clothing
• Alert teacher to spill
• Dispose of paper towels in proper receptacle
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Emergency procedures
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• In case of chemical in eyes or on body• Immediately go to eye wash
station
• Turn on and hold eyes open in stream for 5 min
• Use shower to get chemical off body if necessary
• Alert teacher
• Clean up spill
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Emergency procedures
• In case of broken glass
• Alert teacher
• Do not attempt to clean up on your own
• Clean and bandage wound if cut
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Question 1
What is the name of this piece of equipment?
A. Test tube
B. Volumetric flask
C. Beaker
D. Watch glass
Question 2
What must be worn before beginning every lab?
A. Goggles
B. Lab coat/apron
C. Gloves
D. All the above
Question 3
What is the name of this piece of equipment?
A. Bunsen burner
B. Ring stand
C. Test tube stand
D. Test tube holder
Question 4
If the lab says you need 0.5 M copper sulfate, you should be looking for?
A. A solid
B. A liquid
C. A gas
D. A plasma
Question 5
If anything concerning happens during lab what should you do?
A. Rinse eyes
B. Get fire extinguisher
C. Tell teacher
D. Ask a classmate what to do
Learn More!
• More equipment you should know here
• Good site with flashcards for functions of equipment
• Government chemistry lab safety guide. Pages 6-9 are for students (read about fake fingernails, yikes!)
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Photo Credits
• Link to wafting picture (slide 16).
• Photos of crucible, tongs, watch glass, graduated cylinder, test tube rack, ring stand, support ring were all from Amazon.com
• 2 Videos from youtube.com
Demonstrating proficiency to Pegi
Students at Bass Memorial Academy
Freshmen
Sophomores
Juniors
Seniors
0
2
4
6
Why am I doing this
for
one
point
The Shives Family
Males Females
Shives 4 5
Other 1 2
Males Females
Asian (.5x4)=2 4+(.5x2)=5
White 1 + (.5x4)=3 1+ (.5x2)=2