Reacting masses (FT only)

This lesson, students will apply the law of the conservation of mass and explain why the mass in a reaction may appear to increase or decrease.

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.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:

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.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

Video

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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:

Reacting masses (F)

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

Question 1

Question 2

Question 3

Question 4

Question 5

Q1.When metals react with oxygen in the air, what happens to the mass?

1/5

Q2.What type of reaction happens when a compound breaks down due to heating?

2/5

Q3.A reaction has the equation: calcium carbonate → calcium oxide + carbon dioxide. If 44 g of carbon dioxide is produced when 100 g of calcium carbonate decomposes, how much calcium oxide is made?

3/5

Q4.What mass of aluminium oxide is produced when 135 g of aluminium is burned in 120 g of oxygen?

4/5

Q5.Iron oxide + aluminium → iron + aluminium oxide. If there is 160 g of iron oxide, 54 g of aluminium and 112 g of aluminium oxide, what is the mass of iron produced?

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:

Reacting masses (F)

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

Question 1

Question 2

Question 3

Question 4

Question 5

Q1.When metals react with oxygen in the air, what happens to the mass?

1/5

Q2.What type of reaction happens when a compound breaks down due to heating?

2/5

Q3.A reaction has the equation: calcium carbonate → calcium oxide + carbon dioxide. If 44 g of carbon dioxide is produced when 100 g of calcium carbonate decomposes, how much calcium oxide is made?

3/5

Q4.What mass of aluminium oxide is produced when 135 g of aluminium is burned in 120 g of oxygen?

4/5

Q5.Iron oxide + aluminium → iron + aluminium oxide. If there is 160 g of iron oxide, 54 g of aluminium and 112 g of aluminium oxide, what is the mass of iron produced?

5/5

Lesson summary: Reacting masses (FT only)

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