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Matter
Term | Definition |
---|---|
MATTER | Everything that has mass and takes up space |
ELEMENT | The 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 are shiny |
NONMETALS | Do not conduct heat / electricity very well. May be a gas or a solid |
SEMI-METALS | sometimes like metals and sometimes like nonmetals |
ATOM | the smallest part of an element that still acts like that 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 |
PROTON | Positive charge. Found in the nucleus |
NEUTRON | No charge. Found in the nucleus |
ELECTRON | Negative charge. Orbits the nucleus |
SOLID | Has a definite volume or shape. Particles are very close together, and don’t move past each other. Keeps its shape. |
LIQUID | Has a definite volume but not shape. Particles can move past each other. Takes shape of container |
GAS | No definite volume or shape. Particles spread out evenly and take shape of container. Can be squeezed into a smaller volume |
MELTING POINT | Solid to liquid or liquid to solid. Same temperature as freezing point. |
VAPORIZATION | When liquids become a gas |
CONDENSATION | When gas becomes a liquid. Gas particles touch a cold surface and the temperature drops. |
BOILING | When bubbles of vapor rise through a liquid to the surface. Happens at a certain temperature |
EVAPORATION | Molecules on the surface vaporize. Can happen at any temperatu |
BOILING POINT | The temperature at which vaporization occurs |
CONSERVATION OF MASS | Matter can’t be created or destroyed in a closed system |