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Changing Matter

Changing Matter. Physical & Chemical Changes. Matter can be changed two ways . Physically Physical reaction Physical change Chemically Chemical reaction Chemical change. Physical Changes. Do NOT CHANGE THE TYPE OF MATTER Nothing new or different is formed Could be a change in:

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Changing Matter

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  1. Changing Matter Physical & Chemical Changes

  2. Matter can be changed two ways • Physically • Physical reaction • Physical change • Chemically • Chemical reaction • Chemical change

  3. Physical Changes • DoNOT CHANGE THE TYPE OF MATTER • Nothing new or different is formed • Could be a change in: • Mass • Volume • Density • Change in state • Color • Shape Size

  4. Examples of Physical Changes • Boiling • Freezing • Dissolving • Breaking • Making a mixture 2 or more types of matter (substances) mixed together • Not in specific amounts • Can be separated physically

  5. Chemical Changes • The composition of the substance changes. • The substances present at the beginning of the change are not present at the end; new substances are formed. The change cannot be “undone.” Picture from www.chem4kids.com

  6. Chemical Changes • Evidence of a chemical reaction • Formation of gas • Formation of precipitate • Change in color • Change in energy • EndothermicAbsorbs heat energy (gets cold) • ExothermicReleases heat energy (gets hot)

  7. Chemical Changes • Atoms are re-arranged, NOT created or destroyed

  8. Law of Conservation of Matter • Matter is conserved type of atoms does not change • Nothing is created or destroyed

  9. Law of Conservation of Mass • Mass is conserved amount of atoms cannot change • Nothing is created or destroyed

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