Matter+Changes

__ Matter N Changes __ (Copy the notes. Draw the table and picture.)

Physically and chemically are the two ways matter can change.

__ Physical Changes __ : Shape Changes Bend Break Crack Crush Compress Dissolve Mold

__ State Changes __ : Freezing Melting Evaporation/Vaporization/Boil Condense (gas to liquid) Sublimation (solid to gas) Deposition (gas to solid) Ionization (gas to plasma) Deionization (plasma to gas)

List the four states of matter: 1. 2.  3.  4.



__ Evidence of Chemical Changes __ : Gas bubbles are released. (Example: Baking soda and vinegar mix and produce bubbles.) Something changes color. (Example: Leaves turn from green to other colors.) An odor is produced. (Example: Logs burn and smell smoky.) A solid comes out of a solution. (Example: Eggs cook and a white solid comes out of the clear liquid part of the egg.) Change in temperature. Endothermic/Exothermic Changes in properties A new substance is formed

__ Conservation of Matter __ The idea of atoms explains the law of conservation of matter. Atoms rearrange in reactions, but they do not disappear. The kinds and numbers of atoms are the same before and after the reaction. The only change is that the bonds between the atoms are rearranged. Shown below: