| A | B |
| elements | substances that are made up of only one type of atom ; can't be broken down |
| protons | particles of atoms with a positive charge |
| neutrons | particles of atoms with no electric charge |
| electrons | particles of atoms with a negative charge |
| atomic number | the number of protons in an atom; above the element symbol |
| isotopes | atoms of the same element that have different numbers of neutrons |
| heterogeneous | a mixture is not mixed evenly; components retain properties; (different) |
| homogeneous | mixture which is evenly mixed throughout (the same) |
| eternal | without beginning or end; everlasting |
| ventilation | a system for circulating fresh air |
| flashback | an interruption in the story which tells about an earlier episode |
| venture | a risky or dangerous undertaking |
| arpeggios | notes of a chord played in quick succession |
| staccato | music with short, distinct notes |
| fiasco | an ambitious project which ends in ridiculous failure |
| matter | anything that has mass and takes up space |