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Section 3.2. Changes in Matter. Objectives. Define physical change and list several common physical changes Define chemical change and list several common chemical changes Apply the law of conservation of mass to chemical reactions. Physical Changes.
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Section 3.2 Changes in Matter
Objectives • Define physical change and list several common physical changes • Define chemical change and list several common chemical changes • Apply the law of conservation of mass to chemical reactions
Physical Changes • Alter a substance without changing its composition • Cutting paper • Crumbling foil • Changes in the state of matter
Chemical Changes • Process in which 1or more substances change into new substances • chemical reaction • Ex: • Rusting • Burning
Conservation of Mass • Mass in neither created nor destroyed during a chemical reaction • Mass is always conserved • This is a law!!!
Homework • Physical and Chemical Changes Worksheet