1. Predicting Products
Target 4-2

2. Target 4-2
I can predict products by identifying and interpreting types of reactions.

3. Reading Reactants
Check for oxygen (O2) and an organic compound (C and H)  Combustion
Check for an acid (H__) and base (__OH)  Acid-Base
Is it one element and one compound?  Single Replacement
Is it two compounds?  Double Replacement

4. Predicting Products Combustion
In a combustion reaction, the products are always CO2 + H2O

5. Predicting Products Combustions
Ex) C2H6 + O2 
Ex) CH2O + O2 

6. Predicting Products Acid-Base
The H from the acid and the OH from the base form H2O
The “leftover” elements form an ionic compound
The one farther left on the periodic table goes first in the formula
Must balance charges

7. Predicting Products Acid-Base
Ex) H2S + KOH  Ex) HBr + Ca(OH)2 

8. Predicting Products Single Replacement
The element that starts by itself will trade places with the first element in the compound
The second element in the compound will stay in the compound
The new compound is ionic – must have balanced charges
If you have two positive charges together, you switched the wrong element!

9. Predicting Products Single Replacement
Ex) K + AuF2  Ex) Ca + CsCl 

10. Predicting Products Double Replacement
The first element in each compound are the ones that trade places.
Both new compounds are ionic – must have balanced charges!
If you have 2 positive or 2 negative charges together, you switched the wrong elements!

11. Predicting Products Double Replacement
Ex) Cs2O + CaS  Ex) SrBr2 + LiF 

12. Exit Ticket Tell the TYPE of reaction. Then predict the PRODUCTS.
TiCl2 + SrO 
HBr + Mg(OH)2 
C2H5OH + O2 