Transcript Science equipment and meaning again - kateh

Science equipment and meaning.
By Kate Harrison
Myp 2
Beaker
• Beaker: a liquid-measuring container.
• It helps us measure different liquids. We do it
by pouring liquid into the container and
looking at what it measures by looking at the
numbers.
burette
• Measures volume of solution
• A uniform-bore glass tube with fine gradations
and a stopcock at the bottom, used especially
in laboratory procedures for accurate fluid
dispensing and measurement.
The burette is commonly used in titrations to
measure precisely how much liquid is used.
Clay triangle
• A wire frame with porcelain.
• A clay triangle, physically, is three sets of two
wires with the ends twisted to form a triangle.
• The clay triangle is used to hold a crucible
while the crucible is heated.
Wire gauze
• Used to spread heat of a burner flame. Wire
gauze can be used to support a container
(such as a beaker or flask) during heating.
When the bunsen burner flame is beneath it,
with a tripod, the wire gauze helps to spread
the flame (and heat) out evenly over the
container.
Test tube
• Used as holder of small amount of solution.
• The definition of a test tube is
“clear, cylindrical glass tube usually open at one
end and rounded at the other, used in
laboratory experimentation."
Forceps
• Holds or picks up small objects
Graduated pipette
• Measures solution volumes.
Graduated cylinder
• Measures approximate volume if liquids.
• Graduated cylinders are specifically designed
to make accurate liquid volume
measurements. The volume is read from the
lowest portion of the meniscus of the liquid
Crucible
• Used to heat a small amount of a solid
substance at a very high temperature.
• A crucible is a container of a strong material
capable of withstanding very high
temperatures.
Funnel
• Used to transfer solids and liquids without
spilling.
Thermometer
• The main function of a thermometer is to
Measure temperature.
condenser
• Used in distillation.
• Its function is to Condense substances in gas
form back into liquid
balance
• Measures mass of materials.
• You place the object on the weight on the left
side and move the three weights. When they
arrow on the right side is on 0 then you add
up the number on the weights and that is the
total mass of your object.
pH meter
• A pH meter Measures acidity of solutions.
Centrifuge
• Separates materials of varying density.
Pipette
• Used to transfer measured substances of
varying density.
• Gives drop by drop.
• Varies in designs.
Droppers
• For addition of liquids, drop by drop.
• It’s a device that can measure out one drop of
water somewhat accurately.
Glass funnels
• For funnelling liquids from one container to
another, or for filtering when equipped with
filter paper.
Graduated cylinders
• For measurement of an amount of liquid. The
volume of liquid can be estimated to the
nearest 0.1 mL with practice.
• How it works.. Picture..
Ring stand (with rings or clamps)
• For holding pieces of glassware in place.
• Its function is for supporting laboratory
apparatus.
Test tubes
• For holding small samples or for containing
small-scale reactions.
Test-tube holders
• For holding test tubes when tubes should not
be touched.
Tongs
• Similar function to forceps, but are use full for
larger items.
• To move things/objects about.
Volumetric flasks
• To measure precise volumes of liquid or to
make precise dilutions.
•
Wash bottles
• For dispensing small quantities of distilled
water.
Watch glasses
• For holding small samples or for covering
beakers or evaporating dishes.
Wire gauze on a ring.
• Supports beakers to be heated by bunsen
burner.
THANK YOU FOR WATCHING 
By Kate Harrison Myp 2