Chapter 4.2
Physical Change, Chemical Change, and the Three Kinds of Reaction
Dissolving salt breaks every bond in the crystal, so is it a chemical change? The honest answer is that the line is drawn by what breaks and what forms, and the same question sorts every reaction into three families.
in preparation · lesson 16 of 45
By the end
- 01Decide whether a process is chemical or physical by what bonds or interactions change
- 02Classify a reaction as acid–base, oxidation–reduction, or precipitation
- 03Assign oxidation numbers to find what is oxidized and reduced
- 04Predict a precipitate knowing that sodium, potassium, ammonium, and nitrate salts always dissolve