Weighing in on Mass

The many forms of water. Pond surrounded by snow.

Matter comes in all shapes, sizes and color. Matter has three principles, it can be a solid, liquid, and gas. So, let's look at water. Water is considered a liquid state at room temperature, but put water in the freezer it becomes a solid, ice and hard and cold. On a hot summer day water becomes vapor, an invisible gas. Can you think of any other matter that changes states?

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This is a difficult question, think of a tree in the forest, it catches fire. A chemical change is occurring with the burning wood. The fire creates a chemical reaction and produces the wood into ash and gases that are no longer wood.

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Ok, I get it matter has different states, it can be a solid, a liquid and a gas. Where does mass fit into this?

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