1. Day 20: Reaction Types Sci 10Chemistry

2. Look at the following reactions. What do they have in common? Look for patterns… 2Mg + O 2  2MgO H 2 + Cl 2  2HCl 8Fe + S 8  8FeS 2H 2 + O 2  2H 2 O Element + element  compound A + X  AX Type 1 – Synthesis Reactions

3. Type 1 - Synthesis

4. Look at the following reactions. What do they have in common? Look for patterns… 2KClO 3  2KCl + 3O 2 2NCl 3  N 2 + 3Cl 2 2MgO  2Mg + O 2 How are these reactions related to the previous reactions? Compound  element + element AX  A + X Type 2 – Decomposition Reactions

5. Type 2 - Decomposition

6. Look at the following reaction. What is happening? Look for patterns… Mg + 2HCl  MgCl 2 + H 2 Element + compound  element + compound A + BX  AX + B AX + Y  AY + X Type 3 – Single Displacement Reactions

7. Type 3 – Single Displacement

8. Look at the following reactions. What do they have in common? Look for patterns… Ba(OH) 2 + Na 2 SO 4  BaSO 4 + 2NaOH NaOH + HCl  NaCl + H 2 O CuSO 4 + NaOH  Cu(OH) 2 + Na 2 SO 4 Compound + compound  compound + compound AX + BY  AY + BX Type 4 – Double Displacement Reactions

9. Type 4 – Double Displacement

10. Neutralization Reactions – A Double Displacement Reaction Acid + Base = a specific double displacement reaction called neutralization Acid + Base → Salt + Water (always) Ex: –HCl (aq) + NaOH (aq) → NaCl (aq) + H 2 O (l) pH 7 = neutral

11. Extra Practice with Naming Acids and Predicting Products Write the formulae, predict the products, balance the equation, and identify the acid, base and salt Carbonic acid and calcium hydroxide react Hydrobromic acid and potassium hydroxide react Sulfuric acid and ammonium hydroxide react

12. Extra Practice with Naming Acids and Predicting Products Write the formulae, predict the products, balance the equation, and identify the acid, base and salt HNO 3 (aq) + KOH (aq)  H 3 PO 4 (aq) + 3 NaOH (aq)  HCl (aq) + Al(OH) 3 (aq) 

13. Look at the following reactions. What do they have in common? Look for patterns… CH 4 + O 2  CO 2 + H 2 O C 3 H 8 + O 2  CO 2 + H 2 O (Compound with CH) + O 2  CO 2 + H 2 O Type 5 – Combustion reactions

14. To Do Day 20 Practice 1 p.155 #9, 11, 12, 13