| A | B |
|---|
| weight | measure of the force of gravity on you |
| mass | the measurement of how much matter it contains |
| International System of Units | a system scientists use to measure the properties of matter |
| volume | amount of space that matter occupies |
| density | relates the mass and volume of an object or material |
| atom | smallest particle of an element |
| molecule | group of atoms that are joined together and act as a single unit, smallets part of a compound |
| chemical bond | force that holds two atoms together |
| nucleus | center area of an atom |
| electron cloud | area around the nucleus of the atom, contains the electrons |
| protons | positive particle in nucleus of an atom |
| neutrons | negative particle orbiting the nucleus of the atom |
| electrons | negative particle found in the electron cloud of an atom |
| water density | 1g/mL |
