Thursday, January 20, 2011
Reflect on the expansion of water and salt water experiments you and your classmates performed. What are some of the interesting results and struggles with this experiment.
Relate your thoughts on this experiment to the scientific question "Is the earth warming?"
Wednesday, January 19, 2011
For your last homework assignment, choose 20 items around you in your world and list their ingredients or materials down to the molecular level. List the chemical names of the ingredients and show a molecular structure image.
Tuesday, January 18, 2011
Friday, January 14, 2011
Thursday, January 13, 2011
What is the chemicals and their structures that make up cardboard?
What is the chemicals and their structures that make up styrofoam?
What is the chemicals and their structures that make up waxes?
Explain why water is attracted to cardboard and not styrofoam.
Wednesday, January 12, 2011
Prepare to present the results of the Liquids/Surfaces experiment.
Items to present:
1. pictures of observations
2. collected data
3. data in a graph/plot/table
4. conclusions based on data related to the molecular attractions and/or repulsions of the various chemicals or materials observed.
List the common units for mass, volume, and length in the metric system.
List the common prefixes for "big" metric items and "small" metric items.
Convert 12 inches into m.
Convert 30 mpg to km/l.