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chapter 3
| Question | Answer |
|---|---|
| matter | everything that has mass and takes up space |
| element | ingredients that make up all other substances.Can't be broken down into other substances |
| metals | good conductors of electricity and heat. can bend without breaking. most have a gray color |
| nonmetals | do not conduct heat/ electricity very well maybe a gas or solid |
| semi metals | sometime like metal and some times like nonmetals |
| atom | the smallest part of the element that still acts like an element |
| atomic theory | states that everything is made of atoms |
| compound | a type of matter made of two or more element |
| molecule | smallest particle of a compound that still acts like a compound |
| proton | positive charge. found in the nucleus |
| neutron | no charge.found in the nucleus |
| electron | negative charge. orbits the nucleus |
| solid | has a definite shape and volume. particles do not move past each other,do not past each other. Kepps shape |
| liquid | definite volume but not shape,particles can move past each other. Takes shape of container |
| gas | has no definite shape or volume. Particles take spread out evenly and take the shape of container |
| plasma | Like a gas, but conducts electricity like a metal. Occurs with high temps or electric charge. |
| MELTING POINT | When solid to liquid or liquid to solid. Same temp as freezing point. |
| EVAPORATION | When liquids become a gas. |
| CONDENSATION | When gas become a liquid. Gas particles touch a cold surface and the temperature drops |