Year 2
Are there some changes we can't reverse?
In this lesson, we will be learning about reversible and irreversible changes. We will look at some examples of changes that can be reversed, which are called reversible changes, before moving on to looking at some examples of changes that cannot be reversed, which are called irreversible changes.
Year 2
Are there some changes we can't reverse?
In this lesson, we will be learning about reversible and irreversible changes. We will look at some examples of changes that can be reversed, which are called reversible changes, before moving on to looking at some examples of changes that cannot be reversed, which are called irreversible changes.
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Lesson details
Key learning points
- Reversible vs irreversible changes
- Examples of irreversible changes e.g. cooking
Licence
This content is made available by Oak National Academy Limited and its partners and licensed under Oak’s terms & conditions (Collection 1), except where otherwise stated.
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4 Questions
Q1.
We learned three main ways to separate mixtures. They were separating by hand, separating by magnetism and __________.
separating by weighing.
Q2.
Which method would you use to separate beads of different colours?
Magnetism.
Sieving.
Q3.
Which method would you use to separate sand from gravel?
Magnetism.
Separation by hand.
Q4.
Which method would you use to separate small pieces of metal from sand?
Separation by hand.
Sieving.
3 Questions
Q1.
Freezing is an irreversible change. True or false?
True.
Q2.
Baking a cake is an irreversible change. True or false?
False.
Q3.
Burning is a reversible change. True or false?
True.