Introdution to Physical Science- Lexi Metnick

Safety Lab:

  • Keep your goggles over your eyes at all times
  • Nurse Ext: 2828
  • Fire extinguisher, fire blanket, eyewash/shower
  • Do not taste, touch, or directly smell chemicals
  • Never touch glass when it was on the alcohol burner
  • Never leave flame when it is lit
  • Always clean up when done

The Reaction in a Bag Lab

The purpose of the Reaction in a Bag lab was to record the observations that occur when multiple chemical substances are combined and to use my observations to understand the reactions of the chemicals.

1. Observe and record appearance of solid A and B in data table

2. Waft red liquid and record odor in data table

3. Lay opened plastic bag flat on table

4. Put 1 spoonful of solid A into the corner of the bag

5. Put ½ spoonful of solid B into other corner of the bag

6. Keeping bag flat pour 5ml of red liquid into bag

7. Seal bag tight and mix substances

8. Observe and touch bag (where the mixture is)

Heating Baking Soda

The purpose of this lab was to observe and record the reaction that occurs when baking soda is heated.


1. Put baking soda into a dry test tube (about 0.5 cm)

2. Fill bottle of water all the way to the top

3. Put your hand over the mouth of the bottle, put in container and put rubber band around container and bottle

4. Have teacher check the set up

5. Watch and record data (three blue dot questions)

6. Remove tubing the cap flame


1. 0.5 cm baking soda into another test tube

2. Pour tea into both test tubes about ¼ filled

3. Gently stir (don’t forget to clean stirring rod in between stirring test tubes)

4. Compare color of tubes

5. Clean up

Volume Notes

Volume: L x W x H
Unit of Measurement: CM3
Standard unit of length: meters
Volume of liquids: Use graduated cylinder to measure volume

Box Questions

3. 50 cubic centimeters

4. Rectangular B is wider then A

5. The volume is 7

7. the second cube

8. because of the shape of the cone

9a. 1.2; 3.8

9b. 1.65; 2.51; 4.50

9c. Because it is more accurate

10. it goes by 0.1 and 0.2

11. a= 40 cm3 b= 1.3 cm3

12 cm: 11.5-12.4
12.0cm: 11.95-12.04
12.00cm: 11.995-12.004

13. lines get further apart because less surface so you need more depth/height and it is easier to read