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Chemical reactions
- A Chemical Reaction or Change is when 2 substances react together
- New substance is always made!!!
- New substance is always made!!!
- Physical
- There is a change of state or shape
- Substance has the same properties as before
- There is a change of state or shape
- Chemical
- 1+ substances created
- New substance has different properties
- Difficult to reverse
- Whenever a chemical change takes place there must be a chemical reaction
- 1+ substances created
- Signs of a chemical reaction
- Bubbling/fizzing
- Precipitate/solid formed
- Smell (gas formed)
- colour change
- Temperature change
- Bubbling/fizzing
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