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Observing Changes In Matter . Unit 3 Matter and Chemical Change . There are 2 types of change: ________Change - one in which a material changes from one state to another and can change back into its original state. ( eg ) Salt dissolved in water. Frozen juice thawing

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observing changes in matter

Observing Changes In Matter

Unit 3 Matter and Chemical Change

slide2

There are 2 types of change:

  • ________Change- one in which a material changes from one state to another and can change back into its original state.

(eg) Salt dissolved in water.

Frozen juice thawing

  • _________Change- occurs when two or more materials react and create new materials. The new materials have completely different properties from the original substances
controlling change to meet human needs
Controlling Change to Meet Human Needs
  • ____________________Foods
  • Benefit – food can be eaten long after it was packaged (many months later)
  • _________uses this technique. (called MRE or meal ready to eat)

Two MRE packets: beef teriyaki and meatloaf with gravy

more uses for chemical changes
More uses for chemical changes.
  • Corn can be made into __________, and paint and nail polish remover.
  • This is done through the chemical process of ___________________.
  • What is the benefit to these corn substances?