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Matter & Changes by Jim Alton

Matter & Changes by Jim Alton. Monday Pg 14 to pg 17. Sources. Frank, David; Little, John; Miller, Steve (2000). Science Explorer - Chemical Interactions . Needham, MA & Upper Saddle River, NJ:

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Matter & Changes by Jim Alton

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  1. Matter & Changesby Jim Alton Monday Pg 14 to pg 17

  2. Sources • Frank, David; Little, John; Miller, Steve (2000). Science Explorer - Chemical Interactions. Needham, MA & Upper Saddle River, NJ: • Hurd,, Dean; Silver, Myrna; Bacher, Angela (1993). Physical Science. Needham, MA & Englewood Cliffs,NJ: Prentice Hall. • Sibert, Gwen (5/16/2004). Types of Equations. Retrieved November 23, 2006, from Types of Equations Web site: http://www.chem.vt.edu/RVGS/ACT/notes/Types_of_Equations.html • Hand (2006). Mr. Hand’s 8th Grade Science Site, Retrieved November 23, 2006, from Mansfield Middle School Web Site: http://www.mansfieldct.org/schools/mms/index.htm • Quotes by Stephen Wright • NJCCCS 5.1, 5.6

  3. Objectives • Differentiate between an element, mixture & solution, compound. • Explain the difference between physical and chemical change.

  4. Building Blocks of Matter • Elements • Compounds • Mixtures • Solutions – Well mixed mixtures

  5. Elements • a substance that cannot be broken down into other chemical substances by chemical or physical means. • All the matter around you is composed of one element or a combination of two or more elements.

  6. Compounds • Most elements are not found in their pure form in nature. • They are more likely found as parts of compounds. • A compound is a substance made up of 2 or more elements chemically combined in a specific ratio.

  7. Mixtures • A MIXTURE is a combination of two or more substances that are not chemically united and do not exist in fixed proportions to each other. Most natural substances are mixtures. • The different parts of a mixture keep their individual properties. • A solution is a well-mixed mixture.

  8. Changes in Matter • Physical Change • Chemical Change

  9. Physical Change • A physical change is a change in which no new substances are formed. • Examples: changes of shape, changes of states

  10. Chemical Change • A chemical change is a change in which one or more new substances are formed.

  11. Physical and Chemical Changes • A physical change is sort of like writing a word in a different style: • stampedes  stampedes • It is still the same word. Same meaning. It just looks different. • A chemical change is like taking a word and scrambeling the letters about to make new words. • Stampedes  made + steps

  12. To PowerPoint Index

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