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SCIENCE
Vocab Cards
| Term | Definition |
|---|---|
| 1 Atom | Smallest particle into which an element can be divided and still have properties of that element |
| 2 element | substances that are building blocks of all matter |
| 3 nucleus | substances that are building blocks of all matter |
| 4 electron shell | region around the nucleus where an electron may be found |
| 5 proton | positively charged particle |
| 6 neutron | particle with a neutral charge |
| 7 electron | negatively charged particle found in the electron cloud |
| 8 Atomic number | number of protons in the nucleus of one atom |
| 9 atomic mass | average mass of one atom |
| 10 valence electron | elements with a shiny surface |
| 11 Metal | elements with a shiny surface |
| 12 Nonmetal | elements solid usually gas or brittle solid at room temp. |
| 13 metalloid | elements that have characteristics of a metal and non meta |
| 14 group | a family of elements in the periodic table that have similar physical/chemical properties |
| 15 period | a row in the periodic table arranged by atomic number |
| 16 element | substance that cant be broken down into simpler particles |
| 17 transition elements | elements in groups 3-12 in the periodic table |
| 18 representative elements | elements in groups 1 and 2 and 13-18 in the p.t. |
| 19 ion | atom or molecule that has an overall electric charge |
| 20 isotope | atoms of the same element that have different number of nuetrons |
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