Chapter 2-1: Nature of Matter
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12 terms
Terms | Definitions |
|---|---|
 atom | the basic unit of matter |
| proton | a positively charged particle in the nucleus of an atom |
| electron | a negatively charged particle outside of the nucleus of an atom |
| neutron | a neutrally charged particle in the nucleus of an atom |
| element | a pure substance that consists entirely of one type of atom |
| isotope | atoms of the same element that differ in the number of neutrons they contain |
| compound | a substance formed by the chemical combination of two or more elements in definite proportions |
| ionic bond | formed when one or more electrons are transferred from one atom to another; attraction between oppositely charged ions |
| ion | positively and negatively charged atoms |
| covalent bond | formed when electrons are shared between atoms |
| molecule | the structure that results when atoms are joined together by covalent bonds |
| van der Waals force | intermolecular forces of attraction |
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