Chemical and Physical Changes Flashcards
What is a physical change? Give examples
When substances change in state, shape, or breaks into pieces.No new substances are made.
Dissolving sugar in water
Mixing sand with water
Freezing juice to make an ice lolly
What is a chemical change? Give examples on how it would change
A change that produces one or more new substances.They may look or taste different and they might be in a different state.They are nearly impossible to reverse.
What happens to particles during changes?
When a substance changes state, it’s particles stay the same but their arrangement and movement change.
When an ice cube melts to make liquid water, it’s particles begin to move around each other instead of being in fixed positions.The particle arrangement becomes random and not regular
