Name: ______Chemical and Physical Changes and Properties Webquest

*****THIS IS UP ON MY WEBSITE UNDER CHEMISTRY!!!!*****

1)  Use the following website to create complete definitions for the following words and answer the questions below:

http://www.physlink.com/Education/AskExperts/ae244.cfm

http://dl.clackamas.edu/ch104-01/DistChemPhyChange.htm

Physical Change-

Chemical Change-

If you take all of the ingredients necessary to make chocolate chip cookies and bake them in the oven, is it a physical or chemical change?

What are 2 criteria that can be used to determine if a physical or chemical change has taken place?

Check this out…http://www.mcwdn.org/chemist/pcchange.html

What is an endothermic reaction?

What is an exothermic reaction?

What is a catalyst in a chemical reaction? Give one example.

2)  Name at least 6 clues that can be used to determine if a chemical change has taken place.

http://www.ric.edu/faculty/ptiskus/chemical/

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3)  What is the difference between a chemical and physical property of a substance?

http://www.quia.com/quiz/303980.html

*** Take the quiz on the website to practice chemical/physical changes/properties, Score: /20

http://www.iun.edu/~cpanhd/C101webnotes/matter-and-energy/properties.html

Define Chemical Property-

Define Physical Property-

4)  List the following as chemical or physical properties of a substance:

·  Water boils at 100 degrees Celcius:______

·  Diamonds can cut glass: ______

·  Water can be separated by electrolysis into hydrogen and oxygen atoms: ______

·  Sugar dissolves in water: ______

·  Yeast and sugar forms carbon dioxide and ethanol: ______

·  Iron rusts in a damp environment: ______

5)  Describe how baking cookies has both physical and chemical reactions involved.

http://blog.tutor.com/2010/01/the-chemistry-of-baking-cookies/

6)  Click on the following link and describe what happens to the molecules when you run each simulation:

http://cwx.prenhall.com/petrucci/chapter1/medialib/tutor/f20/0103.html

7)  For each of the following links, decide if you are observing a chemical or a physical reaction and justify your answer with AT LEAST 2 reasons.

http://www.youtube.com/watch?v=ZQfHF8WvQAo

What 2 Things are reacting?

Chemical or Physical? Why?

http://www.youtube.com/watch?v=UgWYoDaMYcI&feature=fvst

What 2 Things are reacting?

Chemical or Physical? Why?

http://chemed.chem.purdue.edu/demos/main_pages/5.9.html

What 2 Things are reacting?

Chemical or Physical? Why?

http://chemed.chem.purdue.edu/demos/main_pages/5.21a.htm

What 2 Things are reacting?

Chemical or Physical? Why?

http://www.youtube.com/watch?v=3zoTKXXNQIU

What 2 Things are reacting?

Chemical or Physical? Why?

http://www.youtube.com/watch?v=90VyvOhPmA0&feature=related

What 2 Things are reacting?

Chemical or Physical? Why?

8)  Do any of the previous reactions give clues that a chemical reaction has taken place, but are actually just physical reactions? If so, which ones?