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Warm-Up

Warm-Up. What ionic compounds would form between: 1) Ca and S 2) Li and O 3) K and P 4 ) Mg and N. Types of Chemical Reactions. Synthesis. A synthesis reaction is one where two or more reactants are combined to form a more complex substance. General Form: A + B  AB

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Warm-Up

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  1. Warm-Up • What ionic compounds would form between: • 1) Ca and S • 2) Li and O • 3) K and P • 4) Mg and N

  2. Types of Chemical Reactions

  3. Synthesis • A synthesis reaction is one where two or more reactants are combined to form a more complex substance. • General Form: • A + B  AB • Where A and B are reactants.

  4. Synthesis • Examples: • 2 Na + Cl2 2 NaCl • 2 H2 + O2 ?

  5. Synthesis • 2 H2 + O2 2 H2O

  6. Decomposition • A decomposition reaction occurs when compounds break down into simpler products. • General Form: • AB  A + B

  7. Decomposition • Examples: • Electrolysis of water • 2 H2O  2 H2 + O2 • 2 Al H3 ?

  8. Decomposition • 2 Al H3 2 Al + 3 H2

  9. Single Replacement • In a single replacement reaction, one element in a compound is swapped for another. • General Form: • A + BC  B + AC

  10. Single Replacement • Examples: • Mg + 2 AgCl MgCl2 + 2 Ag • 2 NaCl + F2  ?

  11. Single Replacement • 2 NaCl + F2  2 NaF + Cl2

  12. Double Replacement • In a double replacement reaction, two elements in different compounds trade places. • General Form: • AB + CD  AD + CB

  13. Double Replacement • Examples: • 2 LiCl + MgO  Li2 O + MgCl2 • K2 S + BeCl2  ?

  14. Double Replacement • K2 S + BeCl2  2 KCl + BeS

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