* Physical Change: A physical change alters the form or appearance of a substance, but not its chemical composition. The substance remains the same. Examples include:
* Changing the state of matter (solid to liquid, like melting ice)
* Cutting, crushing, or shaping a material
* Dissolving sugar in water (sugar molecules are still present)
* Chemical Change: A chemical change results in the formation of new substances with different chemical properties. This usually involves breaking and forming new chemical bonds. Examples include:
* Burning wood
* Cooking an egg
* Rusting metal
When you pour oatmeal, you're simply changing its physical state (from solid to liquid) by adding hot water. The oatmeal molecules themselves haven't been altered, they're just dispersed in water.
Let me know if you have other questions!
