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B&W Chem Interaction
PH review chapter 1
| Question | Answer |
|---|---|
| Anything that has mass and occupies space. | Matter |
| The study of the properties of matter and how matter changes. | Chemistry |
| Any characteristic of a substance that can be observed or measured without changing the composition of the substance. | Physical Property |
| Any property of a substance that produces a change in the composition of matter. | Chemical Property |
| The process in which substances undergo chemical changes that result in the formation of new substances. | Chemical Reaction |
| A change that alters the form or appearance of a material but does not make the material into another substance. | Physical Change |
| A solid that forms from a solution during a chemical reaction. | Precipitate |
| A reaction that absorbs energy in the form of heat. | Endothermic Reaction |
| A reaction that releases energy in the form of heat. | Exothermic Reaction |
| A short, easy way to show a chemical reaction, using symbols. | Chemical Equation |
| A substance that enters into a chemical reaction. | Reactant |
| A substance formed as a result of a chemical reaction. | Product |
| The principle stating that matter is not created or destroyed during a chemical reaction. | Conservation of Mass |
| A system in which no matter is allowed to enter or leave. | Closed system |
| A system in which matter can enter from or escape to the surroundings. | Open system |
| A number in front of a chemical formula in an equation that indicates how many molecules or atoms of each reactant and product are involved in a reaction. | Coefficient |
| A chemical reaction in which two or more simple substances combine to form a new, more complex substance. | Synthesis |
| A chemical reaction that breaks down compounds into simpler products. | Decomposition |
| A reaction in which one element replaces another in a compound, or when two elements in different compounds trade places. | Replacement |
| The minimum amount of energy needed to get a chemical reaction started. | Activation energy |
| The amount of one material in a certain volume of another material. | Concentration |
| A material that increases the rate of a reaction by lowering the activation energy. | Catalyst |
| A protein that speeds up chemical reactions in the body. | Enzyme |
| A material that decreases the rate of a reaction. | Inhibitor |
| The process of burning a fuel. | Combustion |
| A substance that provides energy as the result of a chemical change. | Fuel |
Created by:
bwise
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