# Physical Science All about Matter What is Matter? MMatter is anything that takes up space and has mass. YYou probably use different items that are.

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What is Matter? MMatter is anything that takes up space and has mass. YYou probably use different items that are made of matter like crayons, pencils, of matter have different color, size, erasers, and paper. MMany kinds shape, and weight.

What is Mass? Mass is the measure of how much matter there is in an object All matter takes up space and has mass. You yourself take up space and have mass so you are made of matter too.

States of Matter Matter can be found in different forms. The three states of matter are solid, liquid, and gas. A fish tank is a good example of all three matters.

Solid  Solids have a shape of their own.  The shape of most solids does not change.  Solids are found in many different shapes.

Liquid  Unlike solids, liquids never have a shape of their own.  They always have the same shape as their container.  When you drink milk through a straw, you can see milk change shape as it moves through the straw.

Gas  When you are done with all the milk in your glass, what do you think will fill the glass and the straw?  Both will be filled with a matter called gas.  Like liquids, gases also have the same shape as their container.

Physical Change Matter can change from one state to another and it is called Physical Change. Changes in size and shape are also physical changes. In a physical change, you have the same kind of matter before and after the change.

Freezing Point Ice starts to form when water is cooled to zero degrees Celsius. This temperature is called Freezing Point of water. At 0 degrees Celsius, the moving particles in water slow down to form ice.

Boiling Point Water begins to boil at 100 degrees Celsius. This is the Boiling Point of water. As water boils, its particles move faster and farther apart. The particles then escape to form steam.

Chemical Change Some matter can become different matter and this kind of change is called a Chemical Change. Burning causes wood to change to ashes. Sometimes different matter is formed when two or more kinds of matter are mixed together.

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