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Matter

Matter. States of Matter Changes in matter. States of Matter. Solid Liquid Gas. Solids. Microscopic view of a solid. Definite volume Definite shape Atoms are packed together if fixed positions Strong attractive forces between atoms Only vibrate in place. Liquids.

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Matter

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  1. Matter States of Matter Changes in matter

  2. States of Matter • Solid • Liquid • Gas

  3. Solids Microscopic view of a solid • Definite volume • Definite shape • Atoms are packed together if fixed positions • Strong attractive forces between atoms • Only vibrate in place

  4. Liquids Microscopic view of a liquid • Definite volume • Indefinite shape • Atoms are close together • Atoms can overcome attractive forces to flow

  5. Microscopic view of a gas Gases • Indefinite volume and shape • Atoms move very fast • Atoms are far apart • Weak attractive forces

  6. Changes in Matter Physical Change Chemical Change

  7. Physical change • change in a substance that doesn’t change the identity of the substance • Example: Includes all changes in the state of matter (physical changes of a substance from one state to another) • Grinding • cutting • Melting • boiling

  8. Changes in the state of matter deposition

  9. Chemical change • a change in which a substance is converted into a different substance • same as chemical reaction • doesn’t change the amount of matter present

  10. Signs of a chemical change • Energy is absorbed or given off (change in temperature) • change in color or odor • production of gas • Irreversible

  11. Chemical or Physical Change? physical • Water boils • Salt dissolves in water • Milk spoils • A metal chair rusts • Paper is torn • A tree burns down physical chemical chemical physical chemical

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