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Chemical Reaction Notes

Chemical Reaction Notes. Matter is everything around you. Matter is anything made of atoms and molecules. Matter is anything that has a mass. Matter can be changed. It can go through physical change or chemical change.

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Chemical Reaction Notes

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  1. Chemical Reaction Notes

  2. Matter is everything around you. Matter is anything made of atoms and molecules. Matter is anything that has a mass.

  3. Matter can be changed. It can go through physical change or chemical change.

  4. Physical changes are a change in state or form that does not result in a new substance being created.

  5. Some common examples of physical changes are: • melting • freezing • condensing • breaking • crushing • cutting • bending 

  6. Chemical changes result in the formation of a new substance via a chemical reaction. • Energy is required for a chemical change to take place. 

  7. Chemical Reaction • Process in which one or more substance changes to produce one or more new substances with different chemical and physical properties. • During a chemical reaction, molecular bonds are broken and new bonds are made.

  8. Signs that a chemical change has occurred: • production of a gas (bubbles) • formation of a new odor • production of a precipitate (solid) • change of color • Energy change given off as light, thermal, or electrical energy

  9. Common examples of chemical changes that you may be somewhat familiar with are: • digestion • respiration • photosynthesis • burning • decomposition 

  10. Chemical and Physical Changes - Introduction Chemical and Physical Changes

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