Term
| what is at the center af an atom |
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Definition
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Term
| what surrounds the nucleus |
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Definition
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Term
| what is an electron cloud |
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Definition
| an area of space around the nucleus where electrons travel |
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Term
| what has a negative charge and does not travel in defined orbits |
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Definition
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Term
| what does each element have |
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Definition
| a different atomic structure with a particular number of protons neutrons and electrons |
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Term
| what determines the chemical and physical properties of an atom |
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Definition
| number and arrangement of electrons |
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Term
| how are electrons arranged |
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Definition
| in different energy levels and distances from the nucleus |
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Term
| the _________ an energy level is from the nucleus the more electrons it can hold |
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Definition
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Term
| electrons in the level closest to the nucleushave the ___________ amount of energy |
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Definition
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Term
| electrons farthest from the nucleus have the ____________ amount of energy |
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Definition
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Term
| what can be used to understand energy levels |
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Definition
| data from the periodic table |
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Term
| what is the same as the number of protons and electrons in an atom |
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Definition
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Term
| in an atom the outermost energy level ______________ from left to right |
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Definition
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Term
| what does each column in the periodic table have |
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Definition
| one group or family with similar chemical properties |
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Term
| how many electrons do halogens have in there outer energy levels |
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Definition
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Term
| how many electrons are in the alkali matals outer energy level |
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Definition
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Term
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Definition
| on four sides of the energy level |
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Term
| what is the symbol for the element surrounded by as many dots as there are electrons in its outer energy level |
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Definition
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Term
| what represents a single electron |
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Definition
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Term
| what represents paired electrons |
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Definition
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Term
| what is the force that holds 2 atoms together |
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Definition
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Term
| hat can electron dot diagrams be used for |
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Definition
| show how atoms bond with each other |
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Term
| why so atoms bond with other atoms |
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Definition
| so each atom has a stable energy level |
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Term
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Definition
| by losing sharing gaining or pooling electrons |
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Term
| an atom that has gained or lost an atom and is no longer neutral is a |
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Definition
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Term
| what forms when positive and negative ions attract |
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Definition
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Term
| what is sodium chloride formed from |
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Definition
| sodium ions and chloride ions |
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Term
| what are two or more elements that are chemically bonded |
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Definition
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Term
| can atoms gain or lose more than one electron when forming ions |
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Definition
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Term
| when metal atoms share their pooled electrons |
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Definition
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Term
| forms when atoms share electrons |
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Definition
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Term
| what is formed when when atoms share electrons |
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Definition
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Term
| what are covalently bonded compounds |
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Definition
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Term
| what are two pairs of electrons involved in |
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Definition
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Term
| when electrons are unevenly shared |
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Definition
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Term
| what has two opposite ends or poles like a magnet |
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Definition
| polar molecules such as water |
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Term
| what forms from atoms of the same element |
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Definition
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Term
| what represents atoms and compounds |
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Definition
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Term
| what are elements represented by |
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Definition
| one- two- or three- letter symbols |
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Term
| what are compounds described as |
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Definition
| element symbols and numbers |
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Term
| what does a subscript indicate |
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Definition
| number of atoms in a molecule |
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Term
| combination of chemical symbols and numbers |
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Definition
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Term
| what does a chemical formula tell |
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Definition
| which elements are present and how many atoms of each element are present |
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Term
| what does no subscript mean |
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Definition
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Term
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Definition
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Term
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Definition
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Term
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Definition
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Term
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Definition
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Term
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Definition
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Term
| what is the formula to find out how many electrons can go in an energy level |
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Definition
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Term
| how do you find the number of neutrons |
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Definition
| subtract atomic number from mass number |
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Term
| what is another name for columns in the periodic table |
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Definition
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Term
| what is another name for rows in the periodic table |
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Definition
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