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How is an ion with a negative charge called? |
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What 2 things determine the arrangement of ions in an ionic crystals? |
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The ratio of ions & the relative size of ions |
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A chemical bond in which two atoms share a pair of valence electrons |
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In a covalent bond, the atoms are held together by the attractions between what? |
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The shared electrons and the protons in each nucleus |
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How is a compound made from only 2 elements called? |
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The total charges on the cations and anions in the formula of an ionic compound must add up to what? |
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How many ammonium ions are needed to create a compound with one phosphate ion? |
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The properties of a metal are related to what? |
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To the bonds inside the metal |
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a mixture of 2 or more element, with at least one metal |
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What 2 elements do all types of steel contain? |
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What is the force that holds atoms or ions together? |
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What are new substances produced in a chemical reaction called? |
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What are the numbers that appear before the formulas in a chemical equation called? |
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How many types of chemical reactions are there? What are they? |
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5;Synthesis, decomposition, single replacement, double replacement, and combustion |
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What is an oxidation-reduction reaction? |
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Definition
A reaction in which electrons are transferred from one reactant to another |
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What is the process in which an element gains electrons during a chemical reaction called? |
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A change over time can be expressed as a what? |
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A substance that affects the rate of a reaction without being used for the actual reaction |
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A state in which the forward and reverse paths of a change take place at the same rate |
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What is a reaction that releases energy called? |
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