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Physical and Chemical Changes

Create a T-chart in your notes to distinguish Physical Changes from Chemical Changes. Understand the concept of change, defining each type and providing examples like melting ice or burning. Explore evidence such as changes in shape, states, reactions, and more.

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Physical and Chemical Changes

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  1. Physical and Chemical Changes Draw a T chart in your notes and label one side Physical Change and the other side Chemical Change

  2. Concept of Change • Change: the act of altering a substance

  3. Physical Change • Physical change: a change that occurs that does not change the identity of the substance • Melting ice • Freezing Kool-aid • Tearing paper • Boiling water

  4. Evidence of Physical Changes • Dissolved • Change in shape • Change of states • solid to liquid • Liquid to gas

  5. Chemical Changes • Chemical change: a change that occurs causing the identity of the substance to change • Burning • Reacting with other substances • A chemical change is called a chemical

  6. Chemical Changes Cont’d • Evidence of a chemical change: • Formation of gas • Change in temperature • Color change • Formation of a precipitate

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