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Find the unbalanced equations, then balance them. C + H 2 O → CO + H 2

When finely powdered magnesium is added to hydrochloric acid , it violently reacts, producing magnesium chloride and hydrogen gas . Write down the word equation Write down the balanced symbol equation Is this a combination reaction or not? Explain your answer.

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Find the unbalanced equations, then balance them. C + H 2 O → CO + H 2

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  1. When finely powdered magnesium is added to hydrochloric acid, it violently reacts, producing magnesium chloride and hydrogen gas. Write down the word equation Write down the balanced symbol equation Is this a combination reaction or not? Explain your answer.

  2. When iron filings are mixed with sulfur powder and heated, they react with a bright red glow, producing a dark brown substance – known as iron sulfide. Write down the word equation for this reaction Write down the symbol equation Define combination reaction Describe why the above reaction is a combination reaction

  3. Find the unbalanced equations, then balance them. C + H2O → CO + H2 Mg + O2 → MgO CH4 + O2 → CO2 + H2O CuO + H2 → Cu + H2O Mg + H2O → Mg(OH)2 + H2 Fe2O3 + CO → Fe + CO2 C2H6 + O2 → CO2 + H2O 2 2 2 2 2 3 2 3 2 7 4 6

  4. 1. Write down the formula for: • Sodium Chloride • Sodium Carbonate • Iron (II) Sulfide • Iron (II) Sulfate • Magnesium Oxide • Aluminium Oxide • 2. Balance the following equation: • Cu + O2 → CuO

  5. Question: What is the chemical name of “salt”? Sodium Chloride (NaCl)

  6. Sodium Metal

  7. Chlorine Gas

  8. + = ???

  9. Combination Reaction • It is a type of reaction in which two or more substances “chemically” combine to produce a single substance. • A + B → AB • The product most often has different properties from those of the reactants.

  10. Aluminium + Iodine = Aluminium Iodide

  11. Example: Iron & Sulfur

  12. Example: Iron & Sulfur

  13. Practical – Zinc & Sulfur • Method • Prediction – word equation, reason(s) • Results – detailed observations • Conclusion • word equation • balanced symbol equation • type of reaction+ reason(s) • comment on the initial prediction

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