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Glossary of Everyday Terms (These terms will be used in this PPT. You do not need to memorize them, but if you run across a word whose meaning you don’t know, always ask Ms. Benton or return to this slide for help.) Term Clue Definition/Meaning Comprised of What’s it made of? made of, has these things in it Contaminate d To ruin by adding something that doesn’t belong there; to make impure or unfit for use Corrosive destroys, “eats through” matter, burns through matter (including metal or skin) Criteria What’s needed? what should exist or “be there;” the standards, measures, or expectations used in making an evaluation Detonate explode Dilute make something weaker (example: make acid weaker by adding it to water) Dispose of get rid of (Note: This must be done the right way; not all materials should be thrown in the trash or allowed to run down the drain of a sink!) Exist I’m here! be a real, actual, or current thing, not merely something imagined or written about Peruse Look over (to see what sorts of things are there) Preventive Don’t let it! will keep something (usually something “bad”) from happening Purpose What’s it used for? What it’s good for, how it’s used, reason for its being, reason it was invented Return to Last Slide Viewed
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Return to Last Slide Viewed. Glossary of Everyday Terms (These terms will be used in this PPT. You do not need to memorize them, but if you run across a word whose meaning you don’t know, always ask Ms. Benton or return to this slide for help.). Corrosive – Dilute – Dispose of - - PowerPoint PPT Presentation
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Glossary of Everyday Terms(These terms will be used in this PPT. You do not need to memorize them, but if you run across a
word whose meaning you don’t know, always ask Ms. Benton or return to this slide for help.)
Term Clue Definition/MeaningComprised of What’s it
made of?made of, has these things in it
Contaminated
To ruin by adding something that doesn’t belong there; to make impure or unfit for use
Corrosive destroys, “eats through” matter, burns through matter (including metal or skin)
Criteria What’s needed? what should exist or “be there;” the standards, measures, or expectations used in making an evaluation
Detonate explode
Dilute make something weaker (example: make acid weaker by adding it to water)
Dispose of get rid of (Note: This must be done the right way; not all materials should be thrownin the trash or allowed to run down the drain of a sink!)
Exist I’m here! be a real, actual, or current thing, not merely something imagined or written about
Peruse Look over (to see what sorts of things are there)
Preventive Don’t let it! will keep something (usually something “bad”) from happening
Purpose What’s it used for? What it’s good for, how it’s used, reason for its being, reason it was invented
Resistant You
stay out!
able to protect against ; able to fight against; able to withstand
Waft wave your hand so that air (with a scent in it) moves toward your nose
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Corrosive –
Dilute –
Dispose of -
Contaminate-
Can eat through, destroy matter
To make weaker, usually mixing with water
To throw away
To spoil by adding something that doesn’t belong there
How to Work in GROUPS Working in groups is not easy; it takes a lot of skills. The following are some of the skills. Talk
about them with your group. IMPORTANT NOTE: How you work in a group is graded!Give encouragement – Say things like: “Good job,” “clever idea,” and “That’s great!”
Remain on task – Be sure that you are doing the job that you were assigned, not something
else– Avoid chatting until the job is finished
Only show respect– Say “Please,” “Thank you,” and ” May I?”– Look at the person who is talking (Say “I hear you say …. Is that right?”)– Move softly & speak in a kind tone of voice
Use a 12-inch voice (a quiet voice that can only be heard up to 12 inches)
Participate– Do your part, even when you don’t want to. – Take your turn; do what needs to be done; don’t just “watch and wait”
Stay in your group– Stand or sit close to your group members– Face your own group members at all times; do not “turn away” or “look
down”– Do not communicate with other groups with eyes, words, sounds, or actions
Lab Safety Rules
Lab Safety Rules Review• Study the picture in each of the
following slides.• Name the safety rule represented by the
picture.• Click the mouse or press the space bar
to check your answer.
What’s a safety rule depicted here? • Clear the lab
area of anything unnecessary
• No food in lab• Read the
board for directions
What’s the safety rule? Flood eyes with
water for 15 to 20 minutes if anything corrosive splashes in them (or if you think anything might have splashed in them).
What’s the safety rule? Know where all safety equipment is located AND
how to use it. OR
Put out chemical fires with an extinguisher, not water (which will spread the fire!).
What’s a safety rule? Never use a fire extinguisher on a
person; instead, use a fire blanket to smother flames on the person.
What’s a safety rule?
Never run
or horseplay in the lab.
What’s the safety rule?• Never smell a
chemical directly.
• Always waft (wave) the odor toward your nose by waving your hand over the chemical.
What’s the safety rule?
When diluting acid, always pour the acid into water, never water into acid.
Every year, the question that students miss the most on our first test is:When you wish to dilute an acid
(in other words, when you wish to make an acid weaker),
do you:Pour the acid into the water,
or do youPour the water into the acid?
Why?
Notice where the liquid is splashing from? What if that liquid were mostly acid?
What’s a safety rule?
Always wear safety goggles when working with chemicals.
Always work with a partner.
What’s a safety rule?
• Do not touch anything until you are given directions to do so.
What’s a safety rule?
Never stick anything into an electrical socket.
What are the safety rules? Report all damages to
teacher immediately. (Why? If you leave behind damaged material, others may be hurt AND Ms. Tresten needs time to replace the broken materials for the next class.
Place broken glass in the Glass Disposal box, NOT the trash can!
Do not touch broken glass.
Sweep up broken glass with a broom.
What’s the safety rule?
Pay for damages ASAP.
What’s the safety rule?
Always check electrical cords. Never use one that is broken or frayed.
What’s the safety rule? Always test
whether something is hot by holding the BACK of your hand over it, not by touching it.
What’s the safety rule? Read and follow
all directions carefully. It’s a good idea to “check off” each step of a procedure as you conduct it.
What’s the safety rule?
Wash hands after every lab.
What’s the safety rule?
Never enter the storeroom.Storeroom
What are the safety rules?
Always report injuries to the teacher before conducting a lab.
Cover all cuts before working with chemicals.
What’s the safety rule? Always clean up
spills IMMEDIATELY, whether they are on the lab table or on the floor. Spills can cause dangerous accidents.
What’s the safety rule?
• When you don’t understand directions, ask the teacher for help.
What’s the safety rule? Always read
labels twice; they can look similar, but slight mis-readings can have dangerous results.
What’s the safety rule?
Never taste a chemical.
Never drink from a beaker or other piece of lab equipment.
What’s the safety rule?
Always tie back long hair before working with lab equipment.
What’s the safety rule?
Always sweep up glass and carry it in a dust pan; NEVER pick it up with your hands.
What’s the safety rule?
Never touch anything electrical with wet hands or body.
What’s the lab safety rule? Always wear closed
shoes; never go barefoot or wear sandals in lab..
What’s the safety rule? Always tilt test
tubes away from you and everybody else.
Contents can spray or spurt on skin and eyes!
What’s the safety rule? If a chemical
spills on your skin, flood the area with water immediately – and then tell the teacher!
What’s the safety rule? Be very
careful when working with chemicals. Notice the person has two hands outstretched?
What are the rules? If a chemical spills over a large area of your body, use the safety shower immediately!
Wear safety goggles!
What’s the safety rule?
Always wear safety goggles when working with chemicals, electricity, or flame.
What’s wrong?
The scientist needs to use a funnel to pour from test tube into Erlenmeyer flask because test tube has no spout.
What safety rule is being broken?
Always tie back long hair.
What safety rule is being broken?
Always place broken glass in the Glass Disposal Box ONLY, never in a trash can!
What safety rule is being broken?
Always place broken glass in the Glass Disposal Box ONLY, never in a trash can!
• Clip art not specifically credited: “Clip Art and Media.” Microsoft Office Online, 2005, 2, Jul. 2005, <http://office.microsoft.com/clipart/default.aspx?lc=en-us&cag=1>
• Balance Photograph: "Triple Beam Balance." Precision Measurement Supply. 12 Jul. 2005 <http://www.precisionmeasure.com/tool2.htm>.
• Safety goggle cabinet photograph & quote: "Goggle Cabinet and Sterilizer." 2005. Science Kit & Boreal Laboratories. 2 Jul. 2005 <http://sciencekit.com/category.asp_Q_c_E_439794>.
• Glass disposal boxes photograph: "Broken Glass Disposal Box." 2005. Krakeler Scientific, Inc.. 2 Jul. 2005 <http://www.krackeler.com/products/fid/2055>.
• Hot Plate: "Demonstration Hot Plate." Delta Education Lab Supplies. 12 Jul. 2005 <http://www.delta-education.com/productdetail>.
• Magnifying glass photo: "Measurement Buy 4." Tools That Teach. 2005. Arbor Scientific. 12 Jul. 2005 <http://www.arborsci.com/Products_Pages/Measurement/MeasurementBuy4.htm>.
• Meter stick: "How Do I Read a Ruler?." OnlineConversion.Com. 2002. 12 Jul. 2005 <http://www.onlineconversion.com/faq_05.htm>.
• Meter stick (held in hand) photo: "Catch a Meter Stick." NSCU Physics. 2000. NSCU Physics Education Technology Facility. 12 Jul. 2005 <http://www.arborsci.com/Products_Pages/Measurement/MeasurementBuy4.htm>.
• Safety blanket and container photographs: "Fire Safety Kits." Health & Safety. 2005. SAR Camp Equipment Company, Ltd.. 11 Jul. 2005 <http://www.sarcamp.com/store/listCategoriesAndProducts.asp?idCategory=87>.
• Safety shower/eyewash photograph & quote: "Emergency Decontamination Shower & Eyewash." Lab Safety Supply, Inc.. 2005. Gempler's. 11 Jul. 2005 <http://www.gemplers.com/a/shop/product.asp?T1=W9209&UID=200507111757083438046975>
• Bunsen burner, Cutaway Sketch: "Bunsen Burner." Hutchinson's Encyclopedia. 2005. Tiscali.Reference. 2 Jul. 2005 <http://www.tiscali.co.uk/reference/encyclopaedia/hutchinson/m0033660.html>
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