physical change, a change in matter from one form to another that does not result in a different substance. changing size, shape, state, texture, mass, such as in cutting, folding, shredding, crumbling a sheet of paper, chemical change, a change in a substance, produced by chemical means, that results in a different substance. Examples: smoke, ash, rust, rot, tarnish, decay , chemical property, a characteristic of a substance that may be observed when it participates in a chemical reaction. toxicity, flammability, stability, ability to oxidize, and heating value/heat combustion., chemical reaction, a process that leads to the chemical change of one set of chemical substances to another. Example: burning something (like wood, sheet of paper), mixing vinegar and baking soda to create gas bubbles (p.319), cooking, digestion (when you eat), toasting bread, decay, break down into simpler substances (Ex.: what dead plants and animals do).

Unit 6

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