| A | B |
|---|
| diffusion | net movement of particles from an area of higher concentration to an area of lower concentration |
| water | considered most important compound in organisms |
| polar molecule | molecule in which covalent bonds do not share electrons equally |
| acid | solution forms H+ in water; pH below 7 |
| brownian motion | random motion of atoms and molecules |
| solvent | liquid or gas that dissolves a substance |
| ion | charged particle |
| concentration gradient | difference in concentration of substances across a space |
| hydrogen bond | weak bond between water molecules |
| solute | dissolved into a substance |
| mixture | combination of substances in which the individual components retain their own properties |
| dynamic equilibrium | condition in which there is continuous movement of particles but no overall concentration change |
| base | solution that form OH- in water; pH above 7 |
| solution | mixture in which one or more substances are distributed evenly in another substance |
