Chemical Changes

Introduction

Essential Question(s):

What is a chemical change? How does a chemical change differ from a physical change, and where do we see these changes?

Task

After Completing:

Students will understand chemical changes and be able to identify the difference between a chemical and physical change. Students will be able to observe and analyze chemical changes.

Process

Evaluation

Questions

Website 1

1. Is iron rusting an example of a chemical or physical change? Why or why not?

2. What is a chemical change at a molecular level?

3. Why is milk souring a chemical change?

Website 2

1. What happens during a chemical change?

2. What are two possible signs of a chemical change?

3. What is "a solid that separates out of solution during a chemical change"? (Rhode Island College)

Website 3

1. Why is a change in temperature a sign of a chemical change?

2. How can you tell a firework is a chemical change?

3. Which type of matter is created when bubbles form?

Website 4

1. What do you call a change that cannot be reversed?

2. What are 3 common examples of a chemical change?

3. Why are those examples chemical and not physical?

Website 5

1. What is a chemical property?

2. What is formed during a chemical change?

3. What happens when magnesium wire burns? Why is this a chemical change?

Conclusion

Chemical changes are everywhere around us and are easy to understand.

Credits

E. (n.d.). Chemical Change in Matter. Retrieved January 17, 2016, from http://eschooltoday.com/science/states-and-behaviour-of-matter/what-is-…

E. (n.d.). What is a Chemical Change? Retrieved January 17, 2016, from http://www.edinformatics.com/math_science/chem_change.htm

Senese, F. (2015, August 17). What is the difference between chemical and physical change? Retrieved January 17, 2016, from http://antoine.frostburg.edu/chem/senese/101/matter/faq/physical-chemic…

Sohal, M. (2013). Chemical Change vs. Physical Change. Retrieved January 17, 2016, from http://chemwiki.ucdavis.edu/Analytical_Chemistry/Qualitative_Analysis/C…

Tiskus, P. (n.d.). Chemical Changes. Retrieved January 17, 2016, from http://www.ric.edu/faculty/ptiskus/chemical/