4 articles
Chemical Reactions
Reaction types, balancing equations, precipitation, combustion and predicting products.
How to Balance Chemical Equations: A Step-by-Step Method
Why equations must balance, a reliable inspection method with worked examples, tricks for combustion and polyatomic ions, and how the algebraic method handles hard cases.
Chemical vs. Physical Changes: How to Tell Them Apart
The difference between chemical and physical changes, the five signs of a chemical reaction, tricky examples like dissolving and rusting, and chemical vs. physical properties.
The Main Types of Chemical Reactions (With Examples)
Synthesis, decomposition, single and double displacement, combustion, neutralization and redox reactions — how to recognize each type, with balanced examples and a quick identification guide.
Solubility Rules: How to Predict Precipitates
The solubility rules for ionic compounds in water, a memory aid, how to use them to predict precipitation reactions, and how to write net ionic equations.