Procedure B19
Texto del Guión Gráfico
- Begin bypouring 10mL of polyvinyl alcohol (PVA) into a 30mL graduated cup
- Next, pour 2.5 mL of sodium borate into the other graduated cup you have
- One member of your group should slowly and carefully add the sodium borate into the PVA, another person should stir the two together while it is being poured
- As you are completing this step make sure you are jotting down notes about the PVA and carefully observing it
- Observe the properties of the new substance you have created, write them down
- Remember to closely look at the properties of this as well and write what you see down in the data table
- Do a few tests on each additional properties. For example, what happens when you pull this?, does it stick to your desk?, your chair?
- Look at the changes that are going on, observe and record in your B19 data table
- Follow your teachers directions on how to clean up this lab, you do not want to get hurt
- After looking at your new item in a cup transfer it to a paper towel. Investigate and record STRETCHINESS, STICKINESS, BOUNCINESS
- Record all of you information down, you will want it for later
- GO TO OUR NEXT PERIOD
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