| A | B |
|---|
| Atom | basic unti of matter |
| Nucleus | center of the atom (brain of cell) |
| Electron | negatively charged particle found outside the nucleus |
| Proton | positively charged particle found inside the nucleus |
| Neutron | neutral or no charge, found inside the nucleus |
| Element | substance consisting of only one type of atom |
| Isotope | that element is the same but the number of neutrons is different (carbon 12, carbon13, carbon14) |
| Compound | two or more elements joined together |
| Ionic Bond | transfering of electrons between atoms |
| Covalent Bond | sharing of electrons between atoms |
| Molecule | smallest unit of a compound |
| Cohesion | attraction between molecules of the same substance |
| Adhesion | attraction of molecules of different substances |
| Mixture | two or more elements/compounds joined together with no chemical change |
| Solution | two or more elements/compounds joined together with even distribution |
| Solute | substance that is dissolved in a solvent to make a solution (Alka-Seltzer) |
| Solvent | substance in which thing are dissolved (liquids) |
| Universal Solvent | Water |
| Suspension | mixture of water and nondissolved materials (water and sand) |
| pH Scale | system that measures the concentration of hydrogen ions in a solution. It ranges from 0 to 14 |
| Acid | compound that forms hydrogen inos (H+) and ranges from 0-6.4 |
| Bases | compounds that produces hydroixide ions (OH-) and ranges from 7.6-14 |
| Buffer | helps to equalize either acids or bases and range from 6.5-7.5 |
