Physical and Chemical Changes. All matter has properties... What is a property? A property is a trait that tells you something about an object. What would.

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Presentation transcript:

Physical and Chemical Changes

All matter has properties... What is a property? A property is a trait that tells you something about an object. What would the properties of clay be? What would the properties of gold be?

Physical Changes A physical change happens when matter changes size, shape, or form. Physical changes can be reversed. The matter is still the same substance, it just looks or feels different. Examples: breaking glass crushing a can breaking a pencil erosion/weathering changing state (melting, freezing, evaporating, condensing)

Chemical Changes A change in which matter becomes something completely different. Chemical changes CANNOT be reversed. Chemical changes often create heat. Cooking pancakes frying an egg a car rusting leaves changing color fireworks exploding burning wood