What is the difference between physical and chemical changes?
In this lesson, we will compare the characteristics of chemical and physical changes and use our knowledge to categorise changes as either physical changes or chemical reactions.
What is the difference between physical and chemical changes?
In this lesson, we will compare the characteristics of chemical and physical changes and use our knowledge to categorise changes as either physical changes or chemical reactions.
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Lesson details
Key learning points
- Describe the similarities and differences between physical and chemical changes
- Identify whether a physical or chemical change has taken place
- Suggest when a physical or chemical change may be useful
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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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5 Questions
Q1.
A chemical reaction involves a change in the arrangement of particles.
True
Q2.
A match burning is an example of a chemical reaction.
False
Q3.
Salt dissolving is an example of a chemical reaction.
True
Q4.
What is a reactant?
The energy gained by particles when a substance is heated.
The substances that form in a chemical reaction.
The substances that stay the same in a chemical reaction.
Q5.
What is a product?
The energy gained by particles when a substance is heated.
The substances at the start of a chemical reaction.
The substances that stay the same in a chemical reaction.
5 Questions
Q1.
A chemical reaction involves the formation of a new substance.
False
Q2.
A change of state is an example of a physical change.
False
Q3.
A change in appearance tells us a chemical change has taken place.
True
Q4.
Sweat evaporating is an example of a ...
Chemical reaction.
Q5.
Sugar burning to form caramel is an example of a ...
Physical change.