| A | B |
|---|
| Science | a way of obtaining knowledge about the natural world |
| Atomic mass (number) | Sum of protons and neutrons |
| Graphs | data is often organized into these for analysis |
| Valence electrons | outer orbital subatomic particles that determine chemical properties |
| Meter | SI base unit for length |
| Compound | Substance made of two or more elements |
| Covalent | the type of bonding sharing electrons between two non-metals |
| Electron | negatively charged subatomic particle |
| Ions | Electrically charged atoms formed from the gain or loss of electrons |
| Isotopes | differing atomic masses of the same element |
| neutral atoms | atoms having the same number of electrons and protons |
| metals | the largest category of elements |
| oceanography | study of seawater, shorelines, marine life,and seafloor topography |
| meteorology | study of atmoshere and atmospheric phenomena |
| proton | positively charged subatomic particle |
| SI | Standard units of measure used in Science |
| data | information collected during an experiment |
| Alkalli metals | Elements in group 1 that have a valence of +1 |
| atom | the smallest particle of an element that still retains the properties of that element |
| neutron | A sub atomic particle that has no charge and the same approximate mass as a proton |
| Ionic | type of bonding involving the loss or gain of electrons between a metal and a non metal |
| Metallic | A type of bonding involving the sea of electrons among metals |
| atomic number | number of protons of an element that identifies the element |
| dependent variable | the measurable resultant change in an experiment |
| microscope | used to observe very small objects |
| biosphere | area of earth science involving the interaction of living things |
| variable | part of an experiment that can be changed |
| nucleus | central part of an atom containing protons and neutrons |
| atomic mass | weighted average based upon occurences of isotopes in nature |
| periods | horizontal rows of the periodic table |
| families or groups | vertical columns of elements with the same number of valence electrons and similar properties |
| controlled experiment | term for testing one factor at a time |
