Common Lab Equipment Names

Transcription

1 Chemistry Lab Safety, Equipment & Techniques Webquest Name Period Got To and click on Lab Safety Webquest located in the top right of the page. Once there, read the instructions and get started. Webquest Task #1-Identify Equipment Common Lab Equipment Names beaker beaker tongs Bunsen burner buret buret stand clay triangle cork crucible and cover crucible tongs Erlenmeyer flask filter paper funnel glass stir rod graduated cylinder hot plate litmus paper micro plate mortar and pestle ph paper pipet pipet bulb ring ring stand round bottomed flask rubber policeman rubber stopper spatula spot plate test tube test tube brush test tube holder test tube rack thermometer transfer pipet triple beam balance tubing clamp tweezers utility clamp volumetric flask weigh paper wire gauze Using the list above identify the 24 items on the web page you will not use all of the list and you will not use any of them twice. You may have to google image some of the words above to finish out the exercise. 1.) 2.) 3.) 4.) 5.) 6.) 7.) 8.) 9.) 10.) 11.) 12.) 13.) 14.) 15.) 16.) 17.) 18.) 19.) 20.) 21.) 22.) 23.) 24.)

2 Webquest Task #2- Equipment Names Exam Take the exam and print off the final page that states your score on the equipment exam. Staple it to the back of this packet. Webquest Task #3- Safety Rules Fill In The Blanks Print off the final page that states your score on the fill in the blank exercise. Staple it to the back of this packet. Webquest Task #4- Equipment Usage Lighting A Bunsen Burner 1.) To turn on the gas the handle must face with the spicket. (perpindicular, parallel) 2.) To get a spark you must not only push the flint across the grate but you must push also. 3.) Do you need to turn the gas on ALL the way to light the burner? Using A Bunsen Burner 1.) The valve should be closed prior to lighting the Bunsen burner. 2.) Where is this valve located? (Top, On Barrel, Bottom) 3.) The gas control valve controls the height of the flame. 4.) The control vent controls how much oxygen is allowed into the barrel and will allow you to adjust the heat of the flame. 5.) How many blue cones are you looking to have in your flame? 6.) What kind of sound do you want your flame to have? 7.) Where is the air control vent located? (Top, On Barrel, Bottom) 8.) If you want a hotter, bluer and louder flame you need the spaces on the air control valve to. (open, shut)

3 Pouring Liquids In The Lab ***You will have to look very AND LISTEN closely as the video is dark*** 1.) What two safety items MUST be worn before pouring chemicals? 2.) Where do you put the stirring rod? Circle the correct one. a.) In the beaker b.) Across the top of the beaker c.) Along the side of the beaker Reading A Graduated Cylinder 1.) The key to reading a graduated cylinder is called the. 2.) Because of cohesion the water will stick to the sides of the cylinder and dip in the middle. 3.) You will read the amount of fluid at the of the meniscus. (bottom, top) Folding Filter Paper After watching the video obtain a piece of filter paper from your teacher and then fold your filter paper and staple the SINGLE LEAF to a corner of this paper. How To Use A Pipette 1.) What is used to draw liquid into the pipette? 2.) What controls the liquid flow? 3.) What are the 7 steps to follow this will be reviewed at the end Pipette Demonstration 1.) The last video showed a VOLUMETRIC pipette, what type is this one? 2.) If you want 5 ml when do you stop allowing the liquid into the pipette?

4 3.) You will use the to suck the liquid up into the pipette and use your to release the liquid. 4.) In the video, did the man get the pipette to work the first time? 5.) You must get the of the liquid to be right at the zero line. 6.) How do you get the last of the liquid to come out of the pipette tube? 7.) What type of pipette is the most accurate between the Volumetric Pipette and the Graduated Pipette? 8.) When do you squeeze the bulb? a.) After putting the bulb on the pipette. b.) Before putting the bulb on the pipette. 9.) When do you put the bulb on the pipette? a.) Before putting the pipette in the solution. b.) After putting the pipette in the solution. 10.) Does the bulb actually fit on the pipette? 11.) What is the the THIRD type of pipette shown? 12.) When would you use a Disposable Barrel Pipette? Setting Up A Buret ***Remember that college professor I told you about with a dialect that would be hard to understand, but you had to anyway? Well, here is a sampler!*** 1.) What must go into the top of the buret to fill it? 2.) You must bring the buret down to a lower level for reasons. 3.) You can adjust the level of solution by simply some of the solution off into a beaker. 4.) Once you get the solution level to 0 ml you can put the buret and stand back up on the. 1.) What type of experiment is the buret used in? 2.) What type of flask is used in this experiment? How To Use A Buret 3.) You should make sure that the burets level is slightly than the top of the flask. 4.) You should have to the flask to get it under the buret. 5.) The buret is open when the stop cock is and it is closed when it is.

5 5.) Will you ever have the stop cock fully vertical when you are conducting an experiment? 6.) Does the buret need to be totally full? 8.) How do you tell how much fluid was used in the experiment? Weighing A Solid 1.) What must you do with the weigh paper before putting it on the scale? 2.) When do you TARE the scale? a.) After you put the paper on the scale. b.) Before you put the paper on the scale. 3.) What will the scale read AFTER taring it? 4.) How close do you hold the container of chemical to the weigh paper as you transfer the solid? a.) away from the scale b.) somewhat close to the scale c.) over the scale d.) very close to the scale 5.) Do you put excess solid back into the container? Gravity Filtration 1.) Filtering is a way of separating substances from a liquid. 2.) You will need what FOUR pieces of equipment to conduct a filtration experiment. a.) b.) c.) d.) 3.) After putting the filter paper in the funnel you must do what to make sure it sticks to the funnel? 4.) The tip of the funnel should be the side of the receiving vessel (beaker). 5.) What is the glass rod used for during the transfer of the solution to the funnel? 6.) How full should you fill the funnel? 7.) What apparatus is used to finish getting all of the solution into the funnel? ***You can quit the video at the 2:40 mark*** Webquest Task #5- Safety Signs Using the website given find the names of the signs shown on the back page.

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