Form 4 – Week 3 homework

Day 1  Day 2  Day 3  Day 4  Day 5  Day 6

Day 1

Question 1

Give the formula for the following compounds:

  • Potassium sulfate

  • Lithium carbonate

  • Iron (III) hydroxide

  • Ammonium nitrate

  • Zinc phosphate

Day 2

Question 1

Balance the following equations:

  • C₂H₆ + O₂​​ ​​ CO₂ + H₂O

  • KClO₃​​ ​​ KCl + O₂

  • Fe + O₂​​ ​​ ​​ Fe₂O₃

  • NaOH + H₂SO₄​​ ​​ Na₂SO₄ + H₂O

  • Ca + H₂O​​ ​​ Ca(OH)₂ + H₂

Day 3

Question 1

Draw the bonding for the following compounds:

  • KF

  • CS

  • Na₂O

  • CCl4

  • N2

Day 4

Question 1

Continue the following equations:

  • Zn + HCl​​ 

  • CaO + H₂SO₄​​ 

  • Al₂O₃ + HNO₃​​ 

  • K₂SO₃ + H₂SO₄​​ 

Day 5

Question 1

Write an equation to prepare hydrogen and draw the apparatus to collect the gas.

Day 6

Question 1

What is hard water? State the differences between the two different types of hard water? State one way how to remove each of the two different types of hard water.