📚 Part 1: Understanding Chemical Reaction Types

There are four main types of chemical reactions:

Combustion: A substance reacts with oxygen, releasing energy (e.g., burning methane)

Synthesis: Two or more substances combine to form a new compound (e.g., hydrogen + oxygen → water)

Decomposition: A compound breaks down into simpler substances (e.g., water → hydrogen + oxygen)

Displacement: One element replaces another in a compound (e.g., zinc replaces hydrogen in acid)

✏️ Part 2: Short Answer Questions

1. _________________

2. _________________

3. _________________

4. _________________

🔬 Part 3: Reaction Classification Activity

a) Zn + 2HCl → ZnCl₂ + H₂     Type: _______________

b) CH₄ + 2O₂ → CO₂ + 2H₂O     Type: _______________

c) 2H₂O → 2H₂ + O₂     Type: _______________

d) 2Mg + O₂ → 2MgO     Type: _______________