Friday, April 23, 2010
Tuesday, February 23, 2010
Trouble in Tornado Alley
Monday, January 11, 2010
Changing Freezing and Boiling Points
Do you know what is inside the strange building shown in this photograph? The building is used to store salt that is spread on the road when weather conditions are below the freezing point of water. What effect will the salt have on icy roads? Why store the salt in a building?
This truck removes snow and spreads salt. How does spreading salt on roads reduce accidents?
A solution of antifreeze is used to fill car radiators. It lowers the freezing point of the water in the radiator of the car. It also raises its boiling point and reduces corrosion. Why are the properties of this solution useful to motorists? Why isn’t salt used instead?
Thursday, January 7, 2010
Separation Science at the FBI
Questions
1. What are the two types of chromatography mentioned in this reader? Use an encyclopedia, other library resources, and the Internet to find out more about these and other chromatography techniques.
2. Luminol is a chemical used by forensic scientists to reveal traces of blood not readily visible to the human eye. Do a search on the Web site http://www.howstuffworks.com to find out how Luminol works.
Wednesday, January 6, 2010
Getting Taken to the Cleaners
Sunday, January 3, 2010
Separating Solutions and the Salty Sea
Monday, December 14, 2009
Dissolving History
Sunday, December 6, 2009
Heating and Changing Matter
Friday, December 4, 2009
Anchor Activity Student Questions/Ideas for project
Saturday, November 14, 2009
Lost Wax Castings
Tuesday, October 27, 2009
Density Creates Currents
READ THE ARTICLE BY CLICKING ON THE LINK ON THE WEBSITE - THEN ANSWER THE QUESTION AND POST YOUR COMMENT.
Saturday, October 24, 2009
Just a Load of Hot Air
Read the article and answer the question. Post it on the blog and then read the other student's answers.
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