no starter today!!! zplease transfer your answers from the large scantron to a smaller scantron...
TRANSCRIPT
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No Starter today!!!
Please transfer your answers from the LARGE scantron to a SMALLER scantron
Only use a pencil for this please!
We only have 5 minutes to do this!
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•Attendance•Correct HW•Lab Equipment •Beach Balla Holla
• Identify & compare common scientific tools
•H.W. ˃Quiz tomorrow!˃Study NP 6, 7 & 8
Agenda
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Laboratory Tools
1. Hypothesize what your tool measures (solid, liquid, gas)
2. What creative name would you give it?
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Beaker
Glass or plastic
Varies in size (small to large)
Approximate measurement of a liquid
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Erlenmeyer Flask
Glass
Varies in size (small to large)
Approximate measurement of a liquid
Narrow mouth
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Test Tube & Test Tube Rack
Glass Tubes
Holds small amounts of liquid
Test Tube Rack = “Storage”
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Test tube tongs / holder / grippers
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Graduated Cylinder
Glass or plastic
Varies in size (small to large)
Precise amount of liquid Graduations =
“measurement lines” that increase from bottom to top
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Safety goggles / gogglesProtects your eyes
from chemicals/hazardous substances
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Funnel
Precise pour from larger container to smaller container
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Bunsen Burner
Heating/melting substances
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Dropper• Picks up small amounts of liquid• Release liquid one-drop at a time
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Thermometer
Glass
Measures how hot/cold a liquid is Contains the element mercury
= poisonous!!!
Not for use on your body!
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Triple-beam Balance
Very fragile Always hold with TWO
hands
Determines the mass of an object
Ever stepped on a scale at the doctor’s office??
Mass is similar but not the same as weight
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Microscope• VERY fragile!
• Always hold with TWO hands
• Observe very small objects/organisms
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Microscope Slides & Coverslips
Slide = GlassCoverslip = Plastic
Holds specimen in place under microscope
No creepy crawlers!
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DISSECTIONS!!!!!
Now……what you’ve been waiting for…….
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Dissecting tray
Size of binder paper
Keep specimen in here while dissecting
May/may not have rubber on the bottom
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Dissecting toolsScissors – Cut open
specimen
Probe – Pointing or holding open parts of specimen
Forceps – Holding open specimen or holding to eyelevel for observation
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Quick Check
Why do scientists use such a variety of tools?
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Beach Balla Holla
If you are chosen, you will be thrown the beach ball
Complete the sentence/question that is closet to your pointer finger on your RIGHT hand
Keep the ball until the next person is called