I.P.S. First Quiz Study Guide
Goggles must be kept OVER YOUR EYES until Mr. Leeds says to put them away
**even if you are already finished and cleaned up**
Report ALL accidents/spills to Mr. Leeds immediately
Try your best to use common sense
In Case of Emergency
Nurse: ext: 2828
Safety equipment in classroom
Never taste chemicals (even if they look yummy!)
Always waft liquids to detect odor
NEVER WAFT SOLIDS/POWDERS!
Avoid touching chemicals
Always wash hands with soap and water after lab
If chemicals touch skin: flush with water for 1 minute AND notify Mr. Leeds
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
Roll up sleeves, put UP long hair, NOT just pull back (or u cannot do lab)
Never walk 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/beaker while it is being heated
Make sure burner is capped and flame is out when done
End of Experiment
CLEAN-UP AREA & MATERIALS COMPLETELY!!!! (or you LOSE points)
Make certain that burner is out if one was used
Keep goggles on (over eyes) until Mr. Leeds says to put them away.
Reaction in a bag - Lab
Purpose: To record the observations that occur when multiple chemical substances are combined and to use our observations to understand the reaction of the chemicals.
Observe and record appearance of Solids A&B in data table.
Waft red liquid and record odor in data table
Lay opened plastic bag flat on table
Put 1 spoonful of Solid A into corner of bag
Put 1/2 spoonful of Solid B into corner of bag
Keeping bag flat, pour 5mL of red liquid into bag
Seal bag TIGHT and mix substances
Observe and touch bag (where red mixture is)
- Substances A&B
- Red liquid
- 2 spoons
- Graduated cylinder
-wear goggles -wear aprons
Heating Baking Soda
To observe and record the reaction that occurs when baking soda is heated.
1. Put about 0.5 centimeters of baking soda in a dry test tube.
2. Fill plastic container up to mid-line.
3. Fill bottle with water and hold hand over mouth of bottle as you invert it.
4. Insert tubing into bottle.
5. Put stopper into test tube.
6. Have Mr. Leeds check set up.
7. Light burner.
8. Answer blue dot questions numbers 1-3.
9. When reaction ends remove tubing THEN cap flame.
1. Put 0.5 centimeters of baking soda into another test tube.
2. Pour tea into both test tubes. (¼ filled).
3. Stir both test tubes. *(wipe off stirring rod b/w test tubes).
4. Compare the color of test tubes.
1. Two test tubes
2. Baking soda
4. Plastic bottle
5. Plastic container
8. Glass bend
11. Rubber band
12. Stirring rod
13. Peg board
IV. Lab Safety: -wear goggles -wear apron –put up hair –roll up sleeves
Blue Dot Questions
1. Nothing happened at the bottom of the test tube.
2. The top of the test tube started to fog up.
3. The water was being forced out of the bottle and into the container.
4. I think the gas came from the baking soda.
5. I think the droplets came from the gas condensing.
6. The liquid in the tube that was not heated is more transparent than the liquid in the tube that was heated.
7. The baking soda dissolved in the heated tube more than the baking soda in the tube that was not heated.
-Unit of Measurement: cubic centimeters
-Volume = l x w x h
-standard unit of length = meter (m)
1 centimeter (1cm) = .01 m
100 cm = 1 m
Unit cube >r< 1 cubic centimeter
-a small cube is 1cm on each edge
Volume of Liquids
-use a graduated cylinder to measure volume
*ALWAYS check the intervals or scale
units = millimeters (mL) 1mL = 1 cubic centimeter
-Read from bottom of meniscus