Term | Definition |
matter | everything that has mass and takes up space |
element | the ingredients that make up all the other substances, cant be broken down in to other substances |
metals | good conductors of electricity and heat. cant bend without breaking. Most have a gray color |
non metals | do not conduct heat/electricicty very well. may be a gas or solid |
semi metals | sometimes like metals and sometimes like non metals |
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 |
nuetron | 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 |
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. Gas particles touch a cold surface and
the temperature drops |
boiling point | The temperature at which evaporation occurs |
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 |
solute | The substance being dissolved |
solvent | What the substance is dissolved in |
solubility | A way to measure how much a material dissolves into another |