# Atom economy

This lesson, students will calculate atom economy for given reactions and then choose and justify a reaction pathway.

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!

Q1.What is the theoretical yield of a product?

1/5

Q2.H₂ (g) + Cl₂ (g) → 2HCl (g). Starting with 2 g of hydrogen, what mass of hydrogen chloride would be produced? (Relative atomic masses: H = 1; Cl = 35.5)

2/5

Q3.What mass of magnesium oxide is formed when 12 g of magnesium reacts with oxygen? 2Mg + O₂ → 2MgO

3/5

Q4.What mass of aluminium oxide is produced when 13.5 g of aluminium is burned in oxygen? 2Al + 3O₂ → Al₂O₃

4/5

Q5.Which of these is NOT a reason why the percentage yield is less than 100%?

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!

Q1.What is the theoretical yield of a product?

1/5

Q2.H₂ (g) + Cl₂ (g) → 2HCl (g). Starting with 2 g of hydrogen, what mass of hydrogen chloride would be produced? (Relative atomic masses: H = 1; Cl = 35.5)

2/5

Q3.What mass of magnesium oxide is formed when 12 g of magnesium reacts with oxygen? 2Mg + O₂ → 2MgO

3/5

Q4.What mass of aluminium oxide is produced when 13.5 g of aluminium is burned in oxygen? 2Al + 3O₂ → Al₂O₃

4/5

Q5.Which of these is NOT a reason why the percentage yield is less than 100%?

5/5

# Video

Click on the play button to start the video. If your teacher asks you to pause the video and look at the worksheet you should:

• Click "Close Video"
• Click "Next" to view the activity

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# Worksheet

These slides will take you through some tasks for the lesson. If you need to re-play the video, click the ‘Resume Video’ icon. If you are asked to add answers to the slides, first download or print out the worksheet. Once you have finished all the tasks, click ‘Next’ below.

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:

# Atom Economy - Triple

This quiz will test your knowledge from this lesson and previous lessons.

Q1.Which of these is the number of atoms in a mole?

1/6

Q2.Which of these reactions for the production of ethanol has an atom economy of 100%?

2/6

Q3.How do you calculate atom economy?

3/6

Q4.How can you improve the atom economy of a reaction?

4/6

Q5.Which of these is a reason for wanting high atom economy?

5/6

Q6.What is the atom economy for the production of Copper Oxide (CuO) using the reaction shown? CuCO₃ --> CuO + CO₂ The Ar for Cu=63.5, C=12, O=16

6/6

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:

# Atom Economy - Triple

This quiz will test your knowledge from this lesson and previous lessons.

Q1.Which of these is the number of atoms in a mole?

1/6

Q2.Which of these reactions for the production of ethanol has an atom economy of 100%?

2/6

Q3.How do you calculate atom economy?

3/6

Q4.How can you improve the atom economy of a reaction?

4/6

Q5.Which of these is a reason for wanting high atom economy?

5/6

Q6.What is the atom economy for the production of Copper Oxide (CuO) using the reaction shown? CuCO₃ --> CuO + CO₂ The Ar for Cu=63.5, C=12, O=16

6/6

# Lesson summary: Atom economy

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## Time to move!

Did you know that exercise helps your concentration and ability to learn?

For 5 mins...

Move around:
Walk

On the spot:
Chair yoga