No Starter today!!! zPlease transfer your answers from the LARGE scantron to a SMALLER scantron...

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