1. Physical Changes:

* Melting: A solid changes into a liquid when heated. (Example: Ice melting into water)

* Freezing: A liquid changes into a solid when cooled. (Example: Water freezing into ice)

* Sublimation: A solid changes directly into a gas without passing through a liquid phase. (Example: Dry ice turning into carbon dioxide gas)

* Deposition: A gas changes directly into a solid without passing through a liquid phase. (Example: Frost forming on a cold window)

* Vaporization: A solid changes into a gas when heated. (Example: Dry ice turning into carbon dioxide gas)

* Condensation: A gas changes into a solid when cooled. (Example: Frost forming on a cold window)

* Dissolving: A solid breaks down into smaller particles and mixes evenly with a liquid. (Example: Salt dissolving in water)

* Cutting, Breaking, Crushing: These changes alter the shape of a solid but don't change its chemical composition. (Example: Breaking a piece of chalk into smaller pieces)

2. Chemical Changes:

* Burning: A solid reacts with oxygen to produce heat and light, changing its chemical composition. (Example: Burning wood)

* Rusting: A solid reacts with oxygen and water to form a new substance (iron oxide). (Example: A piece of iron rusting)

* Decomposition: A solid breaks down into simpler substances, changing its chemical composition. (Example: A piece of wood decaying)

* Reactions with other substances: A solid can react with other substances to form new compounds, changing its chemical composition. (Example: Baking soda reacting with vinegar)

Important Note: Physical changes are temporary and can be reversed, while chemical changes are permanent and result in the formation of a new substance.