Balancing equations (FT only)

This lesson, students will write chemical formulae using knowledge of ion charges and balance equations using the same number of atoms rule.

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Question 1

Question 2

Question 3

Question 4

Question 5

Q1.The formula of sodium chloride is NaCl. Calculate the relative formula mass of sodium chloride. Relative atomic masses: Na = 23; Cl = 35.5

1/5

Q2.The formula of magnesium sulfate is MgSO₄. Calculate the relative formula mass of magnesium sulfate. Relative atomic masses: Mg = 24; S= 32; O = 16.

2/5

Q3.Calculate the relative formula mass of iron oxide, Fe₂O₃. Relative atomic masses: O = 16; Fe = 56.

3/5

Q4.A chemist was asked to identify a nitrogen compound. The chemist carried out an experiment to find the relative formula mass (Mr) of the compound. The Mr of the compound was 44. Relative atomic masses: N = 14; O = 16. What is the formula of the compound?

4/5

Q5.Calculate the percentage of O in Be(OH)₂. Be = 9; O = 16; H = 1.

5/5

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Question 1

Question 2

Question 3

Question 4

Question 5

Q1.The formula of sodium chloride is NaCl. Calculate the relative formula mass of sodium chloride. Relative atomic masses: Na = 23; Cl = 35.5

1/5

Q2.The formula of magnesium sulfate is MgSO₄. Calculate the relative formula mass of magnesium sulfate. Relative atomic masses: Mg = 24; S= 32; O = 16.

2/5

Q3.Calculate the relative formula mass of iron oxide, Fe₂O₃. Relative atomic masses: O = 16; Fe = 56.

3/5

Q4.A chemist was asked to identify a nitrogen compound. The chemist carried out an experiment to find the relative formula mass (Mr) of the compound. The Mr of the compound was 44. Relative atomic masses: N = 14; O = 16. What is the formula of the compound?

4/5

Q5.Calculate the percentage of O in Be(OH)₂. Be = 9; O = 16; H = 1.

5/5

Video

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Worksheet

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This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Balancing equations

This quiz will test your knowledge from this lesson

Question 1

Question 2

Question 3

Question 4

Question 5

Q1.What is the formula of sodium chloride? sodium ion= Na⁺ and chloride ion = Cl⁻

1/5

Q2.Which of the following equations is balanced?

2/5

Q3.Which of the following equations is balanced?

3/5

Q4.Which number is missing to balance the equation: ___ C + O₂ → 2CO

4/5

Q5.Which number is missing to balance the equation : MgO + ___HCl → MgCl₂ + H₂O

5/5

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Balancing equations

This quiz will test your knowledge from this lesson

Question 1

Question 2

Question 3

Question 4

Question 5

Q1.What is the formula of sodium chloride? sodium ion= Na⁺ and chloride ion = Cl⁻

1/5

Q2.Which of the following equations is balanced?

2/5

Q3.Which of the following equations is balanced?

3/5

Q4.Which number is missing to balance the equation: ___ C + O₂ → 2CO

4/5

Q5.Which number is missing to balance the equation : MgO + ___HCl → MgCl₂ + H₂O

5/5

Lesson summary: Balancing equations (FT only)

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