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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 • What ionic compounds would form between: • 1) Ca and S • 2) Li and O • 3) K and P • 4) Mg and N
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.
Synthesis • Examples: • 2 Na + Cl2 2 NaCl • 2 H2 + O2 ?
Synthesis • 2 H2 + O2 2 H2O
Decomposition • A decomposition reaction occurs when compounds break down into simpler products. • General Form: • AB A + B
Decomposition • Examples: • Electrolysis of water • 2 H2O 2 H2 + O2 • 2 Al H3 ?
Decomposition • 2 Al H3 2 Al + 3 H2
Single Replacement • In a single replacement reaction, one element in a compound is swapped for another. • General Form: • A + BC B + AC
Single Replacement • Examples: • Mg + 2 AgCl MgCl2 + 2 Ag • 2 NaCl + F2 ?
Single Replacement • 2 NaCl + F2 2 NaF + Cl2
Double Replacement • In a double replacement reaction, two elements in different compounds trade places. • General Form: • AB + CD AD + CB
Double Replacement • Examples: • 2 LiCl + MgO Li2 O + MgCl2 • K2 S + BeCl2 ?
Double Replacement • K2 S + BeCl2 2 KCl + BeS