* Physical Change: Involves a change in the form or appearance of a substance, but not its chemical composition.
* Chemical Change: Involves the formation of new substances with different chemical properties.
In the case of a carbon dioxide filled balloon:
* The carbon dioxide remains the same chemical compound (CO2) whether it's in a tank or inside the balloon.
* The only change is the physical state of the CO2 (from compressed gas to a gas filling the balloon).
To illustrate the difference:
* Chemical change: Burning a piece of wood (wood changes into ash, smoke, and gases).
* Physical change: Cutting a piece of wood (the wood is still wood, just in smaller pieces).
