science lab equipment henderson hornets middle school science
Post on 13-Dec-2015
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Objectives Identify common lab equipment
State the functions of common lab equipment
Demonstrate the proper uses of common lab equipment
Bunsen Burner How to use it: We will NOT! Instead, we USE
a HOT PLATE
What it does: Produce a flame to heat glassware and other objects.
Safety concerns: Open flame
Hot Plate • What it Does: Produces heat like a stove
burner
•How to use it: Connect only when given permission. Always ask for the temperature setting.
•Safety Concerns: Never touch the plate with your hand. Don’t reach across the hot plate.
Hot Mitt/Gloves•What it Does: Protects hands against hot containers
•How to use it: Puton hands and be sure to get a good grip
•Safety Concerns: Glassware may slip out of your hands.
Thermometer
•How to use it: Place in container with liquid. Do not let the thermometer rest on the bottom of container
•What it Does: Takes temperature of liquids
•Safety Concerns: If broken, hard to clean up Glass breakage
Beakers
How to use it: Use a graduated cylinder to fill with
the right amount of liquid.
Use it to heat, stir, or mix substances.
What it Does: Holds liquids. Comes in different sizes
Safety Concerns: Breakable, Check for chips or cracks before using it
Beaker Tongs What it does: Use to lift hot beakers
Safety Concerns: Not very easy to use so be careful when using. Grasp near top of beaker
How to use it: Use the rubber ends to wrap around a hot beaker and lift
Stirring rod
How to use it: Gently stir the substances.
What it does: Stirs substances
Safety Concerns: Made of glass, do not use if chipped or broken.
Flasks
How to use it: Read the meniscus when used tomeasure. Fill with care.
Safety concerns: Glass breakage
What it Does: Holds and measures larger and amounts of liquids. Good for swirling liquids
Rubber Stopper
How to use it: Choose the correct size for the glassware you’re using and push in
What it does: Seals glassware
Safety Concerns: If you push too hard, it can break glassware
Graduated Cylinder What it does: Measures liquid very precisely
How to use it: Fill the liquid to the proper volume. Always read the bottom of the meniscus
Safety Concerns: Use a bumper on glass one to protect from breakage.
Pipette
•How to use it: Squeeze the bulb to suction liquid and then let go. Fill the liquid to the proper volume.
•What it does: Measures small amounts liquid very precisely
Safety Concerns: Do not point at anyone
Dropper
• Safety Concerns: Do not point at anyone. Can break if glass.
• How to use it: Squeeze the bulb to suction liquid
Release one drop at a time
• What it does: Dispenses small amounts of liquid
Test Tube
•How to use it: Measure the liquid with a pipette or graduated cylinder to measure liquid and then pour it in. Release one drop at a time.
•What it does: Holds small amounts of liquid
•Safety Concerns: Glass breakage, Do not use if chipped
Test Tube Rack
• Safety Concerns: Keep it balanced so that it does not tip over.
•How to use it: Put test tube in opening.
•What it does: Holds test tubes upright
Test Tube Holder
• Safety Concerns: Don’t squeeze while holding a test tube or the test tube will fall through.
• What it does: Holds test tube for heating
• How to use it: Squeeze handles to open and release to grasp test tube.
Mortar and Pestle
• Safety Concerns: May break
• How to use it: Place substance into the mortar and use the pestle to grind it down to a powder.
• What it does: Grinds chunks of substances into powder.
Ring Stand
• Safety Concerns: May tip over.
• How to use it: Placeon table and connect ringor clamp
•What it does: Used to hold ring and clamps Useful when heat substances with a Bunsen burner
Ring/Clamp
• Safety Concerns: May cause apparatus to tip over. Don’t over tighten.
• How to use it: Attach to ring stand
•What it does: Hold beakers, test tubes, or thermometers when heating substances with a Bunsen burner.
Funnel
• Safety Concerns: Don’t pour liquid all at once or it may spill over.
•What it does: Helps to pour liquid into small openings
•How to use it: Place the funnel tip into the container’s opening. Slowly pour liquid
Petri Dish
• Safety Concerns: Breakage if glass. Plastic can break easily
•How to use it: Place the specimen in the bottom and place the lid on top. Put agar into bottom and swab sample then cover with lid
•What it does: Holds specimen while viewing under a dissecting microscope. Used to grow bacteria
Watch Glass
• Safety Concerns: Don’t touch specimen to microscope lens Glass breakage
•How to use it: Place specimen in glass and put under microscope
•What it does: Holds specimen for viewing under dissecting microscope
Dissecting Pan
• Safety Concerns: Don’t drop on you foot, it is heavy.
•How to use it: Place specimen pan. You may use pins to hold down the specimen
•What it does: Holds specimen for observation and dissecting
Dissecting Pin
• Safety Concerns: Sharp object. Be careful not to poke yourself.
•How to use it: Place specimen pan You may use dissecting pins to hold down the specimen
•What it does: Holds specimen for observation and dissecting
Probe
• Safety Concerns: Sharp object Be careful not to poke yourself.
•How to use it: While holding tissue, use probe
to break through tissue
•What it does: Separates tissue during dissection. Use as a pointer during dissection.
Scalpel
• Safety Concerns: Sharp object, cut away from yourself. Be careful not to cut yourself.
• How to use it: While holding specimen, use scalpel to cut through tissue. Cut through a little at a time so you don’t go deeper than you need to
•What it does: Cuts tissue during dissection.
Scissors
• Safety Concerns: Sharp object. Cut away from yourself. Be careful not to cut yourself.
• How to use it: More useful to use during dissecting than the scalped
•What it does: Cuts specimen or other things in the lab
Forceps
• Safety Concerns: Sharp object, Be careful not to cut yourself
• How to use it: Squeeze sides to hold or pick up item.
•What it does: Picks up small objects. Used to hold tissue or specimen when dissecting.
Microscope
• Safety Concerns: Hold with base and arm when transferring. Will break if dropped. Electrical safety.
•What it does: Magnifies objects
• How to use it: Turn on light and then adjust
using the coarse and fine adjustment knobs
Slide
• Safety Concerns: Glass breakage. Don’t crack with objectives.
• How to use it: Place specimen in the middle.
You may need to add a drop of distilled water
•What it does: Holds specimen you want to view under the microscope
Cover Slip
• Safety Concerns: It is very thin and you may cut yourself
• How to use it: Place lightly onto specimen on the slide
•What it does: Covers specimen on slide. Flattens object so you can see better.
Triple Beam Balance
• Safety Concerns: Don’t drop it. Balance before use.
• How to use it: Place substance or object on pan and adjust riders until balanced
•What it does: Masses substances and objects
Meter Stick and Meter Tape
• Safety Concerns: Don’t get the meter tape tangled. Don’t hit your partner accidently.
• How to use it: For the meter tape, work with a partner, one holds the tape down and the other extends the tape to measure longer distances
•What it does: Measures distance.
Stopwatch
• Safety Concerns: Don’t drop swing around, you might hit someone
•What it does: Measures time
• How to use it: Reset before you use. Push start and stop as accurately as possible
Spring Scale
• Safety Concerns: Don’t drop it. Balance before use
•What it does: Measures force in Newtons
• How to use it: Place the hook at the end of an object and slowly pull.
Insect Traps
• Safety Concerns: Open carefully so insects don’t escape
•What it does: Captures insects
• How to use it: Set up as directed to trap live insects.
Collecting Nets
• Safety Concerns: Don’t fall when using be careful not to tear, they are delicate.
•What it does: Used to collect insects and fish or other aquatic organisms.
• How to use it: Quickly swipe net to capture organisms.
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