Final answer:
Common examples of items that undergo chemical change include burning candles and natural gas in a furnace.
Step-by-step explanation:
There are many examples of common items that undergo chemical changes. Two examples of common items that use chemical change are burning a candle and burning natural gas in a furnace.
When a candle burns, new chemicals, such as carbon dioxide and water, are formed from the burning wax. In the case of burning natural gas, methane, oxygen, and carbon dioxide react to form water and carbon dioxide.
In both cases, not only does the appearance change, but the structure of the molecules also changes, resulting in new substances with different chemical properties.