1. Warm Up (Element or Compound) Identify the following as either an element or a compound: Identify the following as either an element or a compound: Cl 2 CuOO 2 S 8 Na 2 S Cl 2 CuOO 2 S 8 Na 2 S SO 3 P 4 N 2 CO 2 MgF 2 SO 3 P 4 N 2 CO 2 MgF 2

2. REMINDER! Element: a substance that contains only one type of atom Element: a substance that contains only one type of atom Compound: a substance that is composed of atoms of different elements Compound: a substance that is composed of atoms of different elements NOW RE-CHECK YOUR ANSWERS NOW RE-CHECK YOUR ANSWERS

3. Warm Up (Element or Compound) Identify the following as either an element or a compound: Identify the following as either an element or a compound: Cl 2 CuOO 2 S 8 Na 2 S Cl 2 CuOO 2 S 8 Na 2 S SO 3 P 4 N 2 CO 2 MgF 2 SO 3 P 4 N 2 CO 2 MgF 2

4. Chemical Reactions Thousands of reactions But we are only concerned with The “Basic 5 Types”

5. What is happening in common for all of the following reactions? 2 Na + Cl 2 → 2 NaCl 2 Na + Cl 2 → 2 NaCl N 2 + 3 H 2 → 2 NH 3 N 2 + 3 H 2 → 2 NH 3 2 Mg + O 2 → 2 MgO 2 Mg + O 2 → 2 MgO C + O 2 → CO 2 C + O 2 → CO 2 P 4 + 6 Cl 2 → 4 PCl 3 P 4 + 6 Cl 2 → 4 PCl 3

6. Synthesis Two or more simpler substances come together to form a new substance A+B ABABABAB

7. Synthesis Always makes one product out of multiple reactants. Always makes one product out of multiple reactants. +

8. Synthesis When magnesium is burned in the presence of oxygen gas, magnesium oxide is formed. Magnesium + oxygen  magnesium oxide 2Mg + O 2  2MgO

9. What is happening in common for all of the following reactions? 2 HgO → 2 Hg + O 2 2 HgO → 2 Hg + O 2 2 H 2 O → 2 H 2 + O 2 2 H 2 O → 2 H 2 + O 2 2 NaCl → 2 Na + Cl 2 2 NaCl → 2 Na + Cl 2 CaCO 3 → CaO + CO 2 CaCO 3 → CaO + CO 2 H 2 SO 4 → H 2 O + SO 3 H 2 SO 4 → H 2 O + SO 3

10. Decomposition A compound breaks down into two or more simpler substances ABABABAB  A+B

11. Decomposition Always takes one reactant and breaks apart into simpler materials. Always takes one reactant and breaks apart into simpler materials. + + + +

12. Decomposition When hydrogen peroxide is in the presence of sodium iodide, it breaks down into water and oxygen gas. (electrolysis of water) 2H 2 O 2  2H 2 O + O 2 Hydrogen peroxide Sodium iodide Water + oxygen

13. Fe + CuSO 4 → FeSO 4 + Cu Fe + CuSO 4 → FeSO 4 + Cu Cl 2 + 2 NaBr → 2 NaCl + Br 2 Cl 2 + 2 NaBr → 2 NaCl + Br 2 Zn + 2 HCl → ZnCl 2 + H 2 Zn + 2 HCl → ZnCl 2 + H 2 Mg + H 2 O → MgO + H 2 Mg + H 2 O → MgO + H 2 What is happening in common for all of the following reactions?

14. Single replacement One element replaces another element in a compound ABABABAB+C CBCBCBCB+A

15. Single Replacement A single element replaces a positive or negative ion in a compound. A single element replaces a positive or negative ion in a compound.

16. Single Replacement When copper reacts with silver nitrate, silver and copper nitrate are produced. Copper + silver nitrate  silver + copper nitrate Cu + AgNO 3  CuNO 3 + Ag ?? Activity series ??

17. What is happening in common for all of the following reactions? NaCl + AgNO 3 → NaNO 3 + AgCl NaCl + AgNO 3 → NaNO 3 + AgCl BaCl 2 + Na 2 SO 4 → 2 NaCl + BaSO 4 BaCl 2 + Na 2 SO 4 → 2 NaCl + BaSO 4 2 HCl + FeS → FeCl 2 + H 2 S 2 HCl + FeS → FeCl 2 + H 2 S HCl + NaOH → NaCl + H 2 O HCl + NaOH → NaCl + H 2 O

18. Double replacement Two ionic compounds in aqueous solution “switch partners” to form at least one new solid, liquid, or gas. ABABABAB+ CDCDCDCD ADADADAD+ CBCBCBCB

19. Double Replacement The positive ions in two compounds switch places in a reaction & make two new compounds. The positive ions in two compounds switch places in a reaction & make two new compounds. Positive ions

20. Double Replacement When lead nitrate reacts with potassium iodide, potassium nitrate and lead iodide are produced. Lead(II)nitrate + potassium iodide  potassium nitrate + lead(II)iodide Pb(NO 3 ) 2 + 2KI  2KNO 3 + PbI 2

21. What is happening in common for all of the following reactions? CH 4 + 2 O 2 → CO 2 + 2 H 2 O CH 4 + 2 O 2 → CO 2 + 2 H 2 O 2 C 4 H 10 + 13 O 2 → 8 CO 2 + 10 H 2 O 2 C 4 H 10 + 13 O 2 → 8 CO 2 + 10 H 2 O C 6 H 12 O 6 + 6 O 2 → 6 CO 2 + 6 H 2 O C 6 H 12 O 6 + 6 O 2 → 6 CO 2 + 6 H 2 O 2 C 8 H 18 + 25 O 2 → 16 CO 2 + 18 H 2 O 2 C 8 H 18 + 25 O 2 → 16 CO 2 + 18 H 2 O C 2 H 5 OH + 3 O 2 → 2 CO 2 + 3 H 2 O C 2 H 5 OH + 3 O 2 → 2 CO 2 + 3 H 2 O

22. Combustion Compounds (typically with hydrogen and carbon) are combined with oxygen which then produces carbon dioxide and water CxHyCxHyCxHyCxHy+ O2O2O2O2 CO 2 + H20H20H20H20

23. Combustion A compound of carbon and hydrogen reacts with oxygen gas and produces carbon dioxide and water ALWAYS!! A compound of carbon and hydrogen reacts with oxygen gas and produces carbon dioxide and water ALWAYS!! + +

24. Combustion When ethanol reacts with oxygen gas, water and carbon dioxide are produced. ethanol + oxygen  water + carbon dioxide C 2 H 5 OH + 3O 2  3H 2 O + 2CO 2

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26. Identify the type of reaction: BaCl 2 + Na 2 SO 4 → 2 NaCl + BaSO 4 1. Synthesis 2. Decomposition 3. Single Replacement 4. Double Replacement 5. Combustion

27. Identify the type of reaction: N 2 + 3 H 2 → 2 NH 3 1. Synthesis 2. Decomposition 3. Single Replacement 4. Double Replacement 5. Combustion

28. Identify the type of reaction: CaCO 3 → CaO + CO 2 1. Synthesis 2. Decomposition 3. Single Replacement 4. Double Replacement 5. Combustion

29. Identify the type of reaction: CH 4 + 2 O 2 → CO 2 + 2 H 2 O 1. Synthesis 2. Decomposition 3. Single Replacement 4. Double Replacement 5. Combustion

30. Identify the type of reaction: Zn + 2 HCl → ZnCl 2 + H 2 1. Synthesis 2. Decomposition 3. Single Replacement 4. Double Replacement 5. Combustion

31. Identify the type of reaction: C 6 H 12 O 6 + 6O 2 → 6CO 2 + 6H 2 O 1. Synthesis 2. Decomposition 3. Single Replacement 4. Double Replacement 5. Combustion