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Physical and Chemical changes

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by

Harvey Buckle

on 20 September 2018

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Transcript of Physical and Chemical changes

Physical and Chemical changes
Definitions
A physical change in a substance doesn't change what the substance is. In a chemical change where there is a chemical reaction, a new substance is formed and energy is either given off or absorbed. For example, if a piece of paper is cut up into small pieces it still is paper.
Lets look at an example...
Watch Mr Harvey
Now
Write down:

1. Was it Physical or chemical change?
2. What did the Manganese Dioxide do?
Starter
Physical or chemical changes here?
Homework
Examples of Physical and chemical changes at home:

10 of them
Next
Byeeeee!
Making fools gold
We reacted ____ ______ with _______. It made an ______ coloured glow. The prodict was called ____ _________. This was a _________ change because....

Equation:
Now...
Some HARD questions...
20th September 2018
Aim
To know the differences between physical and chemical changes
Full transcript