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
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
- 2.10 cm
- 3.95 cm
- 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