CURRICULUM | SCIENCE | TECHNOLOGY | ENGINEERING | MATH
“Sometimes it is the people no one can imagine anything of, who do the things no one can imagine.” - Alan Turing
PROPERTIES OF WATER
OUR ATMOSPHERE IS AN OCEAN OF AIR
KEY CONCEPTS OF WATER
FOR YOUR NOTEBOOK:
1. Adhesion - One substance sticks to a different substance
2. Cohesion - One substance sticks to the same substance
3. Hydrogen Bond - Attraction between a slightly positive hydrogen atom and a slightly negative atom
4. Polar Molecule - One part slightly negative, one part slightly positive
5. Surface Tension - Cohesiveness of a liquid at it's surface
6. Specific Heat - Amount of thermal energy required to raise the temperature of a substance by 1 degree. So different substances have different specific heats.
ASSIGNMENT
SPECIFIC HEAT DEMO/LAB
You need 3 things if this isn't done by your instructor:
Thermometers (3)
250 mL Beakers (3)
A heat source such as a hot plate.
Water
Graduated Cylinder
Procedures:
In your notes, write the title: "Specific Heat Demo/Lab."
Place 3 250 mL beakers onto the hot plate, evenly spread from each other and the center of the hot plate.
Fill one beaker with 250 mL of water
Fill one beaker with 50 mL of water
Leave one beaker empty
Create a data table that displays the recording of time for each beaker to rise 10 degrees C in temperature
Turn on the hot plate to medium.
Record how long it takes for each beaker to rise 10 degrees in temperature.
Answer the following questions:
Which scenario took the longest to heat up? Why do you think this happened?
What other things should you test to understand specific heat of substances? What things would you change or add to this experiment?
Explain what happened to the experimental samples using the terms thermal energy and temperature.
VISUALIZE THE VOCABULARY
COHESION
ADHESION
SURFACE TENSION
