Goggles Most important piece of lab equipment ) Protects eyes
from broken glass, chemicals and flames.
Slide 3
Length and Volume Meter Stick, Ruler used to measure Length.
Graduated Cylinder, Flask, Beaker used to measure Volume.
Slide 4
Mass Balance Digital Triple beam
Slide 5
Digital Scale You must ZERO/TARE the scale before measuring
mass.
Slide 6
TARE the balance with the container first, then add material to
be measured (liquid/granules) You do not want the mass of the
container in your reading.
Slide 7
Measuring Mass Top Image:
http://www.southwestscales.com/Ohaus_Triple_Beam_750-SO.jpg Bottom
Image:
http://www.regentsprep.org/Regents/biology/units/laboratory/graphics/triplebeambalance.jpg
We will be using triple-beam balances to find the mass of various
objects. The objects are placed on the scale and then you move the
weights on the beams until you get the lines on the right-side of
the scale to match up. Once you have balanced the scale, you add up
the amounts on each beam to find the total mass. What would be the
mass of the object measured in the picture? _______ + ______ +
_______ = ________ g 70 300 3.4 373.4
Slide 8
Measuring Mass Triple-Beam Balance 1 st Place the film canister
on the scale. 2 nd Slide the large weight to the right until the
arm drops below the line. Move the rider back one groove. Make sure
it locks into place. 3 rd Repeat this process with the top weight.
When the arm moves below the line, back it up one groove. 4 th
Slide the small weight on the front beam until the lines match up.
5 th Add the amounts on each beam to find the total mass to the
nearest tenth of a gram.
Slide 9
Beaker Measures liquids (but not very accurately) May be heated
Used to hold or mix chemicals
Slide 10
Stirring Rod Glass rod used for stirring BE CAREFUL! They break
easily
Slide 11
Erlenmeyer Flask Measures liquids (but not accurately) May be
heated Used for mixing Has a cone-shaped container with neck, so
you can hold the flask (to stir) or attach a clamp or use a
stopper.
Slide 12
Graduated Cylinder Measures volumes of liquids accurately
Slide 13
Test Tube/Test Tube Rack Test Tube: May be heated Mix chemicals
Holding small amounts of chemicals Test Tube Rack: Holds test tubes
in a vertical position. Allows for clear sight. Drying rack Test
tube holder: It holds a test tube
Slide 14
Wire Gauze/Funnel/Loop Wire Gauze: Spreads out the heat
produced by a Bunsen burner Funnel: Holds filter paper for
filtering solutions. Transferring liquids to smaller narrow necked
containers Inoculation Loop: A tool used to transfer and spread
microorganisms to a petri dish.
Slide 15
Mortar and Pestle/ Plastic Wash Bottle/Forceps/Crucible Tongs
Mortar and Pestle: Used for grinding crystals Plastic Wash Bottle:
Dispenses water for rinsing equipment Forceps: Used to pick up
small items. Crucible Tongs: Pick up and hold small hot items like
a crucible.
Slide 16
Bunsen Burner (& Striker) Controls release of natural gas
for burning. Surgical tubing connects to gas source. Striker with
flint is used to ignite the burner
Slide 17
Rubber Stopper/Scoopula/Test Tube Brushes/Pipette Rubber
Stopper: Covers test tube for mixing Scoopula: Used to transfer
solids from one container to another Test Tube Brushes: Used to
clean out the test tubes Pipette: A narrow tube into which small
amounts of liquid are suctioned for transfer or measurement.
Slide 18
Petri Dish, Microscope slide and cover slips, and Microscope
Petri Dish: A shallow circular dish with a loose- fitting cover,
used to culture bacteria or other microorganisms. Cover Slip: A
very thin piece of glass placed over a specimen on a glass slide
that is to be examined under a microscope. Microscope slide: A
small, flat rectangular piece of glass on which specimens can be
mounted for microscopic study. Microscope: An instrument used to
see objects that are too small for the naked eye.