IPS study notes

lab safety reaction in a bag heated baking soda measurement

Safety notes

For every Lab:


  • Goggles must be kept over your eyes until Mr. Leeds says to put them away(even if you finished and cleaned up your area)
  • 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 Classroom:

  • Fire extinguisher
  • Fire blanket
  • Eye wash/shower

Chemicals:

  • Never taste chemicals
  • Always waft liquids to detect odor
  • Never waft solids or powders
  • Avoid touching chemicals
  • Always wash hands with soap and water after lab
  • If chemical touches skin: flush skin with water for one minute and notify Mr. Leeds

Glass:

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

Alcohol Burners:

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

End Of Experiment:

  • Clean up area and materials completely ( or you lose points)
  • Make certain that burner is out if one was needed
  • Keep goggles on (over eyes) until Mr. Leeds says to put them away.

Baking Soda Lab

Purpose:

To observe and record the reaction that happens when baking soda is heated

Blue dot questions:


  • The baking soda is getting darker
  • Changing gas into liquid
  • Water is moving from inverted bottle into container
  • The gas came from water going into the bottle and since the bottle is being lit the water is turning into vapor
  • From the water vapor getting cooler and turning to liquid
  • The burned test tube is darker than the test tube that is not being heated. The baking soda stayed in the non-burned test tube.
  • No, cannot be both baking soda because the unheated is baking soda and the heated does not work the same

Experimental Errors:

  • Hole in tubing, wont see gas fill the bottle
  • Stopper is not snug
  • Period before did not clean the stirring rod












Reaction In A Bag

Purpose:
  • To record the observations that occur when multiple chemical substances are combined and to use my observations to understand the reaction of chemicals

Data:

  • picture below

Experimental Errors:

  • If there was a tiny hole in the bag






Big image

Measurement Lab

Volume: Divisions on the graduated cylinders.

  • 10mL- 0.2 mL
  • 25 mL- 0.5 mL
  • 50 mL- 1.0 mL
  • 100 mL- 1.0 mL

Length: measurement of the lines

  1. 2.10 cm
  2. 3.95 cm
  3. 11.51 cm

Measurement Notes

Volume:


  • Unit of measures: cm3(cubic meters)
  • Volume: length x width x height(lwh)
  • Standard unit of length: meter(m)
  • 1 cm: 0.1 m
  • 100 cm: 1 meter
  • Use a graduated cylinder to masure volume
  • Always check the intervals