Today is less math intensive as we are simply balancing chemical equations and indicating the reaction type.

The five types of chemical reactions that we have talked about in class cover about 90% of all chemical reactions. The remaining 10% are more complex.

The five types:

A. Combustion: HC + 2O₂ —> CO₂ + 2H₂O

B. Synthesis: A + B –> AB

C. Decomposition: AB —> A + B

D. Single Replacement: AX + B —> BX + A

E: Double Replacement: AX + BY —> AY + BX

Chemical reactions are balanced when we have equal numbers of each type of element on both sides of the arrow. So if there are 7 hydrogen atoms on the left, there needs to be 7 on the right. Use only whole number coefficients. Do not change subscripts.

Do the attached seven problems and send the results only to Mr. Brown on Remind.

https://drive.google.com/file/d/12caxoDvu6db2GYC7lAq7wGI4DUWy1-mn/view?usp=sharing

Final note: the place where most newer chemistry students make mistakes in these kinds of problems is if the same element is in two compounds on one side of the equation. You must add them to get the total. Combustion reactions have this twist.

So, if A has the coefficients 1,2,3,4 and is a single replacement you’d send:

A: 1,2,3,4 SR

Thank you,

Stay healthy and Stay Breezy

T. Brown