no starter today!!! zplease transfer your answers from the large scantron to a smaller scantron...
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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!
•Attendance•Correct HW•Lab Equipment •Beach Balla Holla
• Identify & compare common scientific tools
•H.W. ˃Quiz tomorrow!˃Study NP 6, 7 & 8
Agenda
Laboratory Tools
1. Hypothesize what your tool measures (solid, liquid, gas)
2. What creative name would you give it?
Beaker
Glass or plastic
Varies in size (small to large)
Approximate measurement of a liquid
Erlenmeyer Flask
Glass
Varies in size (small to large)
Approximate measurement of a liquid
Narrow mouth
Test Tube & Test Tube Rack
Glass Tubes
Holds small amounts of liquid
Test Tube Rack = “Storage”
Test tube tongs / holder / grippers
Graduated Cylinder
Glass or plastic
Varies in size (small to large)
Precise amount of liquid Graduations =
“measurement lines” that increase from bottom to top
Safety goggles / gogglesProtects your eyes
from chemicals/hazardous substances
Funnel
Precise pour from larger container to smaller container
Bunsen Burner
Heating/melting substances
Dropper• Picks up small amounts of liquid• Release liquid one-drop at a time
Thermometer
Glass
Measures how hot/cold a liquid is Contains the element mercury
= poisonous!!!
Not for use on your body!
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
Microscope• VERY fragile!
• Always hold with TWO hands
• Observe very small objects/organisms
Microscope Slides & Coverslips
Slide = GlassCoverslip = Plastic
Holds specimen in place under microscope
No creepy crawlers!
DISSECTIONS!!!!!
Now……what you’ve been waiting for…….
Dissecting tray
Size of binder paper
Keep specimen in here while dissecting
May/may not have rubber on the bottom
Dissecting toolsScissors – Cut open
specimen
Probe – Pointing or holding open parts of specimen
Forceps – Holding open specimen or holding to eyelevel for observation
Quick Check
Why do scientists use such a variety of tools?
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
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