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chapter 3
Term | Definition |
---|---|
matter | Everything that has mass and takes up space |
element | the ingredients that has makes up all substances cant be broken down into other substances |
metals | good conductors of electricity and heat can bend without breaking most have a grey |
nonmetals | do not conduct heat electricity very well may be a gas or a solid |
semi-metal | sometimes like metal and sometimes like nonmetal |
atoms | the smallest part that still acts like that element |
atomic theory | states that every thing is metal |
compound | a type thats made with 2 or more elements |
molecule | smallest particle of a compound that still acts like a compound |
proton | positive charge found in the nuclius |
neutron | no charge found in the nuclius |
electron | negative charge orbits the nuclius |
LIQUID | Definite volume but not shape, particles can move past each other. Takes shape of container |
solid | Has a definite shape and volume. Particles are very close together, and don’t move past each other. Keeps shape |
gas | No definite volume or shape. Particles spread out evenly and take shape of container. Can be squeezed into smaller volume |
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 liquid becomes a gas |
codensation | When gas become a liquid. Gas particles touch a cold surface and the temperature drops |