Irreversible Changes
Science · Matter & Materials · conceptual
Explain that some changes result in the formation of new materials and are not usually reversible, such as burning, rusting, and reactions with acid
What mastery looks like
- Define an irreversible change as one that creates new materials that cannot be changed back
- Give at least three examples: burning, rusting, mixing bicarbonate of soda with vinegar
- Describe observable signs of irreversible change: gas produced, colour change, heat given off, new substance formed
Check your understanding
Can Irreversible Changes explain why you can't un-burn a piece of toast or turn rust back into shiny iron, because a completely new material has been made?
Prerequisites
Required first