Melting
* Ice: This is the classic example. When ice is heated, it melts into liquid water.
* Chocolate: Chocolate bars are solid at room temperature, but they melt when exposed to heat.
* Butter: Solid butter softens and melts when heated.
* Metals: Most metals, like iron, gold, and aluminum, melt at high temperatures.
* Wax: Candles are made of wax, which melts when heated.
Dissolving
* Sugar: Sugar dissolves in water, forming a sugar solution.
* Salt: Table salt dissolves in water, creating a saltwater solution.
* Baking soda: Baking soda dissolves in water.
* Gelatin: Gelatin dissolves in hot water to create a liquid that can be used to make jello.
Other Processes
* Butter: Butter can also become liquid at room temperature if left out for a while (it softens and eventually melts).
* Some plastics: Certain plastics soften and become more pliable with heat.
* Lead: Lead is a metal that melts at a relatively low temperature, which is why it was used in the past for plumbing.
Important Note: The temperature at which a solid turns into a liquid is called its melting point. Different substances have different melting points.
