| A | B |
|---|
| protons | positively charges particles found in the nucleus of the atom. |
| electrons | negatively charges particles found in the electron cloud |
| neutrons | particles with no charge found in the nucleus of the atom |
| matter | has mass and takes up space |
| nucleus of the atom | is the mass of matter |
| electron cloud | takes up the space of matter |
| liquid | definite volume, indefinite shape |
| solid | definite shape and volume |
| gas | indefinite shape and volume |
| plasma | indefinite shape and volume with electronically charges particles |
| substance | anything that contains only one kind of material |
| mixture | a material made of two or more substances in which the basic identity of each substance is not changed |
| heterogeneous mixture | mixture in which the different substances are distributed unevenly |
| homogeneous mixture | a mixture where the different substances are distributed evenly |
| element | a substance that can not be broken down further into simpler substances by ordinary physical or chemical means |
| compound | a substance whose smallest unit is made up of more than one element |
| physical property | a characteristic of a material that can be observed or measured |
| length | distance between two points |
| volume | amount of space an object or materil occupies |
| mass | the amount of matter in an object or material |
| density | the amount of mass of an object compared to its volume |
| physical change | physical properties change, but the kind of substance does not change |
| chemical property | characteristic that allows the object to undergo a chemical change |
| chemical change | one of the substances in a material changes into a different substance |
| evaporation | liquid changing to a gas |
| condensation | gas changing to a liquid |
