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| Made up of protons and neutron at the center of an atom |
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| Negatively charged particle with only 1/1840 the mass of a proton |
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| A chemical that is a pure substance that consists entirely of one type of atom |
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| Atoms of the same element that differ in the number of neutrons they contain |
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| A substance formed by the chemical combination of two or more elements in definite proportions |
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| Formed when one or more electrons are transferred from one atom to another |
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| Positively and negatively charged atomss |
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| When atoms share 2 electrons, it is a single covalent bond and when atoms share 4 electrons it is a double covalent bond, but in few cases atoms share 6 electrons forming triple covalent bonds |
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| The smallest unit of most compounds |
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| When molecules are close together, a slight attraction can develop between the oppositely charged regions of nearby molecules, named after the scientist that discovered them |
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| Known as the attraction between a hydrogen atom with a partial positive charge and another atom with a partial negative charge |
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| Attraction between molecules of the same substance |
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| Attraction between molecules of different substances |
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| Ions from a crystal of table salt in warm water gradually become dispersed, forming a type of end result mixture, known as a solution. |
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| The substance that is dissolved |
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| The substance in which the solute dissolves |
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| Materials that don't dissolve when placed in water, but separate into pieces so small that they don't settle out |
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| Measurement system to indicate the concentration of H+ ions in a solution, indicates the acidity of a solution |
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| Any compound that forms H+ ions in a solution |
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| Compound that produces hydroxide (OH-) ions in a solution |
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| Weak acids or bases that can react with strong acids or bases to prevent sharp, sudden changes in pH |
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| Process that changes, or transforms one set of chemicals into another |
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| The elements or compounds that enter into a chemical reaction |
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| Elements or compounds produced by a chemical reaction |
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| Amount of energy needed to get a chemical reaction started |
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| Material composed of two or more elements or compounds that are physically mixed together but not chemically combined |
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