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chapter 3
Term | Definition |
---|---|
matter | everything that has matter or takes up space. |
Element | can't be broken down into substanes. |
metals | good conductors of electricity and heat. Can bend without breaking. Most have a gray color |
nonmetals | Do not conduct heat / electricity very well. May be a gas or a solid |
semimetals | sometimes like metals and sometimes like nonmetals |
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 |
PLASMA | Like a gas, but conducts electricity like a metal. Occurs with high temps or electric charge |
MOLECULE | smallest particle of a compound that still acts like that compound |
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 |
PROTON | Positive charge. Found in the nucleus |
NEUTRON | No charge. Found in the nucleus |
ELECTRON | Negative charge. Orbits the nucleus |
MELTING POINT | Solid to liquid or liquid to solid. Same temperature as freezing point. |
EVAPORATION | When liquids become a gas |
CONDENSATION | When gas becomes a liquid. Gas particles touch a cold surface and the temperature drops. |
BOILING POINT | The temperature at which evaporation occurs |
MIXTURE | Two or substances that mix together but each keeps its own identity |
SOLUTION | A mixture where substance spreads out evenly and will not settle |
SOLUTE | The substance being dissolved |
SOLVENT | What the substance is dissolved in |
SOLUBILITY | A way to measure how much a material dissolves into another |