Name: ___________________________ ( ) Class:_______ Date: ________

Try the following questions first before attempting to write full chemical equations.1. Write the formula of each of the following compounds:

(a) aluminium bromide: _______________________________

(b) magnesium sulphide: ______________________________

(c) calcium hydroxide: ________________________________

(d) ammonium carbonate: ______________________________

(e) iron (III) sulphate: _________________________________

(f) copper (II) nitrate: _________________________________

(g) sulphuric acid: ____________________________________

2. Write the formula of the following substances, which are monatomic, molecular or metallic.

(a) oxygen: ______________________ (d) sulphur dioxide: _______________

(b) nitrogen: _____________________ (e) argon: _______________________

(c) carbon dioxide: ________________ (f) hydrogen: ____________________

3. Write the word equations for the following reactions:(a) Zinc metal reacts with hydrochloric acid to produce zinc chloride and hydrogen gas.

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(b) Copper (II) oxide is added to nitric acid, thus producing copper (II) nitrate (solution) and water.

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(c) Methane burns in oxygen and give off carbon dioxide gas and water vapour.

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(d) Aluminium chloride reacts with sodium hydroxide, resulting in aluminium hydroxide and sodium chloride.

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Prepared by Lin XJ 1

Secondary 3 NA Science (Chemistry)Chapter 7: Writing EquationsWorksheet 2

Write out the following reactions in chemical equations format with state symbols. Be sure to balance them.

1. iron + chlorine iron (III) chloride (solid)

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2. potassium + chlorine potassium chloride (solid)

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3. magnesium + copper (II) sulphate (solution) magnesium sulphate (solution) + copper

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4. zinc oxide (solid) + hydrochloric aicd zinc chloride (solution) + water

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5. sulphuric acid + sodium hydroxide sodium sulphate(solution) + water

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6. silver nitrate (solution) + sodium chloride (solution) silver chloride (solution) + sodium nitrate (solution)

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7. iron (III) nitrate (solution) + potassium hydroxide iron (III) hydroxide (solid) + potassium nitrate (solution)

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8. magnesium (solid) + water (gas) magnesium oxide (solid) + hydrogen (gas)

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9. chlorine (gas) + sodium iodide (solution) sodium chloride (solution) + iodine (solid)

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10. sodium (solid) + water (liquid) potassium hydroxide (solution) + hydrogen (gas)

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Prepared by Lin XJ 2