Term | Definition |
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. |
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. When gas particles touch a cold surface they become more solid and can become a liquid. |
boiling point | The temperature at which evaporation occurs |
matter | Everything that has mass and takes up space |
elements | 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 have a gray color |
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 small particles |
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 |
nuetron | No charge. Found in the nucleus |
electron | Negative charge. Orbits the nucleus |
mixture | Two or more substances that mix together but each keeps its own identity |
solution | A mixture where substance spreads out evenly and will not settle and you can not separate the ingredients |
solute | The substance being dissolved |
solvent | What the substance is dissolved in |
solubility | A way to measure how much a material dissolves into another |