Matter is all around us. Matter is the air you are breathing. Matter is the stuff you touch and see. And it is more. Matter is defined as anything that has Mass and takes up space. Matter is found in 3 major states; solid, liquid and gas.
Matter can move from one state to another, but can still be the same substance. A change of state, also called a phase change, is a physical change from one state of matter to another, for example, from solid to liquid or from liquid to gas.
How does matter move from one phase to another? If the motion of the atoms is altered by pressure or temperature, the state can change too. By lowering the temperature of water, it can freeze into a solid. By heating water, it can become steam which is a gas. Whether solid, liquid or gas ‐ water is still water.
Pressure can change matter from one state to another. Deep in the earth solids turn to liquids because the heavy weight of layers and layers of the earth push down on the solids causing them to turn to liquid Magma . This is just one example of how pressure can change matter too. Other matter changes too, but often only exists in two states or requires the help of humans and technology to move through all three phases. Water is the only matter on earth that can be found naturally in all three - solid, liquid and a gas.
Below is a video for changes in states of matter enjoy
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