Chemical Reaction or Physical Change

Check out this video of two guys with way too much Diet Coke and way too many Mentos!

Click on this link!

http://www.eepybird.com/dcm1.html

Question:

Can you explain why this is not a chemical reaction and it is a physical change?

Test This Week!

Just a few thoughts on what types of questions you should be able to answer:

1. How does heat affect the motion of atoms or molecules?

2. How does heat affect density of matter?

3. Explain the process by which a liquid changes into a solid. Be sure to indicate what happens to the atoms, how the density changes, and how heat is involved.

4. Give an example of a solid changing directly into a gas. What is this process called?

5. Give an example of a gas changing directly into a solid. What is this process called?

6. Using the Periodic Table of the Elements, determine the following information for any element: Atomic Mass, Atomic Number, Number of Protons, Number of Electrons, Number of Neutrons

How Do I Make a Model of an Atom?

Check out this web page for information to help you better understand the drawing of models of atoms.
This web page is found on the same web site as our Periodic Table of the Elements.