Science Exam

Safety - 3.8

ISP Lab Safety Notes:

For Every Lab:


  • Goggles must be kept over your eyes until Mr.Leeds says to put them away (even if you already finished and cleaned up)
  • Report all accidents and spills to Mr.Leeds immediately
  • Try your best to use common sense


In Case of Emergency:

  • Nurse: Ext: 2828


Safety Equipment in Classrooms:

  • Fire extinguisher
  • Fire blanket
  • Eye wash/shower


Chemicals:

  • Never taste chemicals
  • Always waft liquids to test odor
  • Never waft solid powders
  • Avoid touching chemicals
  • Always wash hands with soap and water after lab
  • If chemicals touch skin: flush skin with water for 1 minute and notify Mr.Leeds


Glass:

  • Hot glass and cold glass looks the same
  • Never use chipped or broken glass (tells Mr.Leeds and dispose of broken glass in proper trash
  • Never use force to remove or insert broken glass


Alcohol Burners:

  • Roll up sleeves, put up long hair, (not just pulled back or you cant do the lab)
  • Never look away from a lit burner
  • Never point the open of a hot test tube at yourself or someone else
  • Do not look down into a test tube/beaker while it is being heated
  • Make sure burner is capped and flame is out when done


Emd of Experiment:

  • CLEAN-UP AREA & MATERIALS COMPLETELY!!! (Or you loose points)
  • Make sure the burner is out if one was used
  • Keep goggles on your eyes until Mr.Leeds says to put them away


Chapter 1 Test:

Calculations:


L x W x H= V


Volume of Dry Sand-

Volume of Water-

Volume of Sand and Water-

Volume of Sand Alone-

Volume of Air Space-

% of Dry Sand that is Sand-

% of Dry Sand that is Air Space-


Sensitivity of a Balance-


Did any student make mistakes? Where there massing off? How would you tell?


Measurements-


  1. Volume
  2. Mass
  3. Count




  1. Volume
  2. Mass
  3. Other Mean



Measure Lines.


Determine how much liquid is in a cylinder.

Chapter 2 Test

Calculations:


Mi of a substance

Mf of a substance

Delta M

Percentage change in mass- dm over mi = x over 100 (cross multiply)

Chapter 3 Test (3.1-3.8)

Calculations:


D= M over V

Delta M

Delta V

Mass of gas (it is the delta M positive)

Volume of gas (it is the delta V positive)

Density of gas


others in note book