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Definition
| the minimum energy required by the reactant particles to initiate a chemical reaction. |
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| a substance that changes the rate of a chemical reaction but is not used up in the reaction. |
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| states that reactant particles must collide with sufficient energy and the correct orientation to initiate a chemical reaction. |
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| the number of particles of a substance in a given volume. Units are in mols per litre (mol L-1) |
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| the number of reactions happening in a given amount of time. |
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| the extent of the surface of an object or substance. |
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| a measure of the kinetic energy possessed by particles of matter. |
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| A chemical substance that neutralises bases, dissolves some metals and turns litmus red. They have a pH of <7 |
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| A substance that indicates whether a solution is acidic or alkaline by its colour when mixed with the solution |
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| A substance is a substance that changes the colour of indicators (e.g. turns red litmus paper into blue), reacts with acids to form salts, and has a pH >7 |
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| A salt that forms a basic solution |
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| A solution with a large amount of solute in solution. |
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| The ion or molecule that forms when a basic particle or ion accepts a proton. |
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| The ion or molecule that forms when an acidic molecule or ion donates a proton to water. |
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| A salt that forms an acidic solution |
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| A solution with a small amount of solute in a solution |
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Definition
| The acidic ion that has the formula H3O+ |
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Definition
| The basic ion that has the formula OH- |
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| A natural dye that s red in acid conditions and blue in alkaline conditions. |
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| A chemical reaction in which an acid and base react to form a salt |
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| The pH scale shows how acidic or basic a substance is. pH is defined as the negative log of the hydronium ion concentration. |
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| An acid molecule that is able to donate more than one proton to water molecules |
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| An acid/base indicator that has a range of colours indicating the degree of acidity or alkalinity of a solution |
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Definition
| An acid or base that only partially dissociates when added to water. |
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