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Physical and Chemical Properties Matter Matter is anything that takes up space and has mass. Matter can change in two ways – physical or chemical. Four States of Matter Solids Liquids Gases Plasmas Matter Matter can change from one state to another by increasing or decreasing temperature or pressure. Physical Change 1. 2. 3. No new substance is created and the original matter can be recovered. A physical change does not change what the matter is. The substance may seem different, but the way the atoms are linked up are the same. Physical Change Physical changes include: Changing the shape or size Dissolving Changing from one state of matter to another By adding energy, the state changes. plasma + energy gas +energy liquids + energy solids Examples of Physical Change water chopping wood evaporating erosion clothes drying rock breaking in a dryer mixing Kool-Aid Chemical Change 1. 2. When a chemical change takes place, a new substance is made. The matter can not be changed back into its original state. Examples of Chemical Changes fruit rotting or spoiling rust decay of plants burning silver tarnishing car burning gas baking bread Practice Number your paper 1 – 10. Write chemical or physical for each of the following to describe the type of change which is taking place. 1. Is this a physical or chemical change? dirt added to a puddle of water 1. Physical Change dirt added to a puddle of water 2. Is this a physical or chemical change? making whip cream 2. Physical Change making whip cream 3. Is this a physical or chemical change? baking soda fizzes with vinegar 3. Chemical Change baking soda fizzes with vinegar 4. Is this a physical or chemical change? sharpening a pencil 4. Physical Change sharpening a pencil 5. Is this a physical or chemical change? a stick broken into small pieces 5. Physical Change a stick broken into small pieces 6. Is this a physical or chemical change? sugar turns brown, then black with heat 6. Chemical Change sugar turns brown, then black with heat 7. Is this a physical or chemical change? using hot water to expand a metal cup 7. Physical Change using hot water to expand a metal cup 8. Is this a physical or chemical change? freezing water 8. Physical Change freezing water 9. Is this a physical or chemical change? cornstarch turns black with iodine 9. Chemical Change cornstarch turns black with iodine 10. Is this a physical or chemical change? toasting a marshmallow 10. Chemical Change toasting a marshmallow