Question | Answer |
Matter | Everything that bass mass and takes up space |
Element | The ingredients that make up all other substances. Cant be broken into other substances. |
Metals | Good conductors of electricity and heat. Can bend without breaking Most have a gray and shinny look. |
nonmetals | Do not conduct heat/electricity very well. May be a gas or a solid |
semimetals | sometimes like metals and sometimes like nonmetals |
Atom | The smallest part of an 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 elements |
molecule | smallest particle of a compound that still acts like that compound |
protons | positive charge. found in the nucleus |
neutrons | No charge. Found in the nucleus |
Electron | Negative charge. orbits the nucleus |
Solid | Has a definite shape and volume. Particles close to get her, never move past each other. Keeps shape |
Liquid | Definite volume but no shape, particles can move past each other. take shape of container |
gas | No definite shape or volume. 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 voltage or temperature. |
Melting Point | When solid to liquid or liquid to solid. same temp as freezing point. |
Evaporation | When liquid becomes gas. |
condensation | When gas becomes liquid. gas particles touch a cold surface and the temp drops. |