june25,2013week1day2 % … · microsoft word - 7th w1d2 student class notes.docx author: elizabeth...

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June 25, 2013 Week 1 Day 2 LABORATORY EQUIPMENT AND TECHNIQUES LAB TO LITERATURE 7 th GRADE STUDENT CLASS NOTES 1. Meniscus a. Definition b. How much liquid is in each graduated cylinder? c. A=______________________________ B=_____________________________ 2. Centrifuges need to be properly balanced. Given tubes with the following amounts of liquid, balance the centrifuge below: a. 2 tubes with 5 ml, 2 tubes with 10 ml, 2 tubes with 15 ml mixture b. 1 tube with 5 ml, 2 tubes with 10 ml, 2 tubes with 15 ml 12 1 4 2 10 5 8 7 9 6 11 3

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Page 1: June25,2013Week1Day2 % … · Microsoft Word - 7th W1D2 Student Class notes.docx Author: Elizabeth Created Date: 6/21/2013 3:21:53 PM

June  25,  2013  Week  1  Day  2  LABORATORY  EQUIPMENT  AND  TECHNIQUES  

LAB  TO  LITERATURE  7th  GRADE  STUDENT  CLASS  NOTES  

 1. Meniscus  

a. Definition  b. How  much  liquid  is  in  each  graduated  cylinder?  

 

c.      

A=______________________________                                                          B=_____________________________    2. Centrifuges  need  to  be  properly  balanced.  Given  tubes  with  the  following  amounts  of  

liquid,  balance  the  centrifuge  below:  a. 2  tubes  with  5  ml,  2  tubes  with  10  ml,  2  tubes  with  15  ml  mixture  b. 1  tube  with  5  ml,  2  tubes  with  10  ml,  2  tubes  with  15  ml    

 

   12   1

  4

  2  10

  5

  8

  7

  9

  6

 11

  3

Page 2: June25,2013Week1Day2 % … · Microsoft Word - 7th W1D2 Student Class notes.docx Author: Elizabeth Created Date: 6/21/2013 3:21:53 PM

3. Following  centrifugation,  the  supernatant  is  the  _____________________________  portion  while  the  precipitate  (pellet)  is  the  ___________________________________  portion  (solid/liquid)    

4. Magnification  of  a  microscope.    Definition:      Fill  in  the  table  with  the  correct  values  

Eyepiece     Objective   Total  Power  

10X   4X    

10X   10X    

10X     400X  

  100X   1000X  

 5. Resolution  

Definition  Which  has  higher  resolution  

6. Put  the  following  freezer  temperaturs  in  order  from  which  will  store  materials  the  longest  to  which  will  store  materials  the  shortest:  4°C,  -­‐20°C,  -­‐80°C,  -­‐150°C  (liquid  nitrogen  freezer)  

1.  2.  3.  4.  

7. How  should  microscopes  be  cleaned?          

Page 3: June25,2013Week1Day2 % … · Microsoft Word - 7th W1D2 Student Class notes.docx Author: Elizabeth Created Date: 6/21/2013 3:21:53 PM

8. Place  the  following  waste  materials  into  to  the  correct  disposal  Broken  glass  beaker,  scalpel  blade,  salt  solution,  agar  plates  containing  bacterial  colonies,  paper  towels  used  clean  wipe  bench  top,  methanol  (toxic  chemical)    

     

9. From  the  scientific  article  displayed,  identify  the  following:  a. Name  of  the  journal  

 b. Title  of  the  article  

 c. Name  of  the  first  author  

   

d. Where  is  the  hypothesis  found?  

SHARPS