CHEMICAL REACTIONS 4 types

SYNTHESIS two or more substances react to form a single substance.

General: A + B  AB Example C + O2  CO2  + O O O O O O O O O O O O O

Decomposition a compound breaks down into two or more simpler substances.

Example: NaCl  Na + Cl  Cl Na Cl + Na General: AB  A + B

Example 2HgO  2Hg + O2  O Hg Hg O + General: AB  A + B

Single Replacement one element takes the place of another element in a compound.

Example: Zn + CuCl2  ZnCl2 + Cu  Zn Cl Cu + Cl Zn Cu + General: AB + C  AC + B

Double Replacement two different compounds exchange positions and form two new compounds.

Example: MgO + CaS  MgS + CaO  Mg Ca + O S Mg Ca + General: AB + CD  AD + CB

You are to draw examples of each type of reaction. Let’s come up with a rubric to go on the back of the drawing.