Two substances have different reactions to light. Two substances have different temperatures. Two substances have different volumes. Two substances have different shapes.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: What would be the best evidence that two substances are made of different types of matter?
Possibilities:
- Two substances have different reactions to light.
- Two substances have different temperatures.
- Two substances have different volumes.
- Two substances have different shapes.

Two substances have different reactions to light.