What physical charictaristics does a seahorse have?
A long snout and bony covering. They all also have a long tail that can grasp onto things.
lets say you have a brick and you brake it in have. that is a physical change because it changed its apperence or physical charictaristics. a chemical change is when it changes to solid to liquid. Or liquid to gas. Like melting an ice cube is a chemical change because it was a solid now its a liquid.