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.
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