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Chem Test #1
Might not be the full test
| Question | Answer |
|---|---|
| Atom Definition | The smallest identifiable unit of an element that retains the properties of the element |
| Greeks atom model | - 4 elements: Earth, air, fire, water - Elements composed of tiny indivisible particles (atomos- meaning indivisible) |
| John Dalton | Billiard ball - Composed tiny, indivisible, uniform, spherical particles - Atoms of the same element are identical (false) - Compounds have whole number ratios |
| Thomson | Plum Pudding Model - Discovered the electron - Electrons uniformly distributed throughout positive material that fills atom |
| Rutherford | 1st gold foil experiment - Atom is empty space besides for all of the positive charge and mass in the nucleus |
| Mendeleev organization | - Increasing atomic mass - Similar physical & chemical properties placed in horizontal rows |
| Modern PT organization | - Increasing atomic number - Elements w/ similar properties in same vertical column |
| Props of metals | - Conduct heat and electricity - Most are gray or silver colored - Solids @ room temp - High MP & BP - Lustrous - Malleable - Ductile |
| Lustrous | Shiny |
| Malleable | Able to be flattened |
| Ductile | Able to be stretched into wire |
| Props of non metals | - Do not conduct heat and electricity - Variety of colors - All different states of matter - Lower MP & BP - Not lustrous - Not malleable - Not ductile |
| Metaloids | Have varying amounts of properties from both metals and nonmetals |
| Group 1 name | Alkali Metals |
| Group 2 name | Alkaline Earth Metals |
| Group 17 name | Halogens |
| Group 18 name | Noble gasses |
| 2 bottom rows | Inner transition metals |
| Top bottom row | Lanthanides |
| Bottom bottom row | Actinides |
| Empirical formula | Simplified ratio of a compound |
| Reason for nomenclature | To help understand reactions |
| Ionic Compounds | - Binary Ionic-Main Group Metal & Nonmetal - Binary Ionic-Transition Metal & Nonmetal - Ionic Compounds w/ Polyatomic Ions - Repeating arrangement of the ions in the compound |
| Molecular Compounds | - 2 nonmetals - noncontinuous, just the given units |
| Cations | - Positively charged ions - Groups 1, 2, 13 |
| Anions | - Negatively charged ions - Groups 15-17 |
| ..."ate" | Basis for other variations (0) |
| ..."ite" | One less oxygen (-1) |
| "hypo"... | Two less oxygens (-2) |
| "per"... | One more oxygen (+1) |
| Adding hydrogen to a polyatomic ion | H has a +1 charge meaning that it will change the charge of the ion (ex: -2 charge will turn to - charge) |