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Warm up

Warm up. Use the colored atoms you made the other day to see if this is a balanced equation Ca + H 2 O = Ca (OH) 2 + H 2. Warm up answers. Ca + H 2 O = Ca (OH) 2 + H 2 How many colors? 3 How many of each? 1 Calcium, 2 hydrogen, 1 oxygen on the left side (reactants)

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Warm up

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  1. Warm up • Use the colored atoms you made the other day to see if this is a balanced equation • Ca + H2O = Ca(OH)2 + H2

  2. Warm up answers • Ca + H2O = Ca(OH)2 + H2 • How many colors? 3 • How many of each? 1 Calcium, 2 hydrogen, 1 oxygen on the left side (reactants) • 1 Calcium, 4 hydrogen, 2 oxygen on the right side (products) • No, it is not balanced

  3. Not balanced • Ca + H2O = Ca(OH)2 + H2 • Yes balanced • Ca + 2 H2O = Ca(OH)2 + H2

  4. Correctly multiplying • H2O = 2 Hydrogens, 1 Oxygen • 2 H2O = 4 Hydrogens, 2 Oxygens • (OH)2 = 2 Oxygens, 2 Hydrogens

  5. Todays activities • Continue working on balancing chemical equations worksheets

  6. Cool down • Is this a balanced chemical equation? If not, rewrite it so it is balanced • Al + Cl2 = AlCl3

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