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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 |