including chemical reaction basics, indications, & symbols Physical Vs Chemical including chemical reaction basics, indications, & symbols

Physical Changes Can affect the size, shape, color, or state of matter but not the composition.

Additional Notes Can be reversed No energy is produced

Affect the composition. New substance is made. Chemical Changes Affect the composition. New substance is made.

Reaction Basics One or more  one or more substances into DIFFERENT substances Reactants  Products

Additional Notes Atoms are rearranged A new substance is formed Changes are not reversible Energy is often produced

Law of Conservation of Matter (Mass) Mass can not be create nor destroyed  Total Mass of Reactants = Total Mass of Products

Indications

Energy Fire, heat, electricity, light,or change temp

Precipitate

Gas Bubbles or fizzing

Color Change

5 types of Reactions

Combination/Synthesis A + X  AX multiple reactants form Always 1 product +

Decomposition AX  A + X Always 1 reactant Breaks down into multiple products +

Single Replacement + A + BX  AX + B Stronger single element “kicks” out weaker Form New compound and new single element **Look at Activity Series –table 3 **Metal kicks out Metal **Nonmetal kicks out Nonmetal +

Most Reactive F Cl Br I Li K Ca Na Mg Al Zn Fe Pb H Cu Hg Ag Au Least Reactive F Cl Br I

Double Replacement + AX + CY  AY + CB Compounds “switch” partners Form 2 new compounds +

Combustion CxHy + O2  CO2 + H2O Must Always Form Always products