* Rearrangement of Atoms: Chemical changes involve the breaking and forming of chemical bonds between atoms. This means the atoms are rearranged into new combinations, creating different molecules and compounds.
* Change in Composition: The new substances formed have a different chemical composition than the starting materials.
* New Properties: The new composition leads to new physical and chemical properties. For example, burning wood creates ash, a completely different substance with different properties like color, texture, and flammability.
Examples of chemical changes:
* Burning: Wood burning into ash
* Rusting: Iron reacting with oxygen to form iron oxide (rust)
* Cooking: Raw ingredients transforming into cooked food
* Digestion: Breaking down food into simpler molecules
Let me know if you'd like more examples or want to explore specific types of chemical changes!
