- A solid is a kind of substance
- Ice cream is a kind of solid
- Hence, ice cream is a solid substance

- Ice cream is a solid substance
- Melting means matter / a substance changes from a solid into a liquid by increasing heat energy
- Ice cream changes from solid to liquid
- So, ice cream melts by increasing heat energy

Hence, ice cream melts by increasing heat energy
Ice cream in a bowl changed from solid to liquid in a few minutes. Which of the following most likely caused this change?
- Melting means matter / a substance changes from a solid into a liquid by increasing heat energy 
- Ice cream changes from solid to liquid 
- A solid is a kind of substance 
- Ice cream is a kind of solid