WHAT IS THE DIFFERENCE BETWEEN A CHEMICAL AND PHYSICAL CHANGE?

Contributed By: AJ B.

Date of Publication: September 30, 2011


A chemical change is the process where something (Normally either chemical element or compound) changes into any number of different substances. While on the other hand a Physical change is when an object has a change that won’t destroy or change the natural chemical compound found in the object. They are different for many reasons, one being the fact that a chemical change is creating a compound that couldn’t have been found in or on the object before. However a physical change just takes what is there and mixes it to make something out of it.
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Figure 1: Physical and Chemical changes
RELATED TOPIC 1
Diet Coke and Mentos Experiment

What you’ll need
2 liter bottle of diet coke
5 Mentos
What to do
1) Take the cap off the coke bottle
2) Get 5 Mentos ready to drop in the bottle
3) Drop the 5 Mentos into the bottle of diet coke and immediately run away

4) Watch the explosion!

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Figure 2: Diet coke and Mentos while exploding


Glossary
Chemical-a substance produced by or used in a chemical process.
Element-a component or constituent of a whole or one of the parts into which a whole may be resolved by analysis.
Compound-composed of two or more parts, elements, or ingredients.

CITATIONS
Encyclopædia Britannica. "chemical reaction." Encyclopædia Britannica Online School Edition.
Encyclopædia Britannica, Inc., 2011. Web. 23 Sept. 2011.

Wikipedia. “Physical change.” Wikipedia. Wikipedia, 2011. Web. 23 Sept. 2011.
Lide, David R. CRC handbook of chemistry and physics : a ready-reference book of chemical and physical data. Boca Raton, FL: CRC Press, 2009. Print.

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