Ch 1.1 Science Vocab Word Scramble
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Term | Definition |
Chemistry | the study of the properties of matter and how matter changes |
Atom | the smallest particle of an element |
Precipitate | a solid that forms from a solution during a chemical reaction |
Reactants | a substance that enters into a chemical reaction |
Coefficient | 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 |
Concentration | the amount of one material in a certain volume of another material |
Inhibitor | a material that decreases the rate of a reaction |
Enzyme | a biological catalyst that lowers the activation energy of reactions in cells |
Conservation of Mass | the principle stating that matter is not created or destroyed during a chemical reaction |
Chemical Bond | the force that holds atoms together |
Synthesis | a chemical reaction in which two or more simple substances combine to form a new, more complex substance |
Element | a substance that cannot be broken down into any other substance by chemical or physical means |
Catalyst | a material that increases the rate of a chemical reaction by lowering the activation energy |
Solution | a well-mixed mixture |
Subscript | a number in a chemical formula that tells the number of atoms in a molecule or the ratio of elements in a compound |
Endothermic Reaction | a reaction that absorbs energy |
Symbol | a one- or two-letter set of characters that is used to identify elements |
Activation Energy | the minimum amount of energy that has to be added to get a chemical reaction started |
Exothermic reaction | a reaction that releases energy in the form of heat |
Mixture | two or more substances that are mixed together but not chemically combined |
Products | a substance formed as a result of a chemical reaction |
Combustion | a rapid reaction between oxygen and fuel that results in fire |
Molecule | the combination of two or more atoms that are chemically bonded |
Chemical Reaction | the process in which substances undergo chemical changes that result in the formation of new substances |
Chemical Formula | a combination of symbols that represent the elements in a compound |
Chemical Change | a change in matter that produces a new substance |
Physical Change | a change that alters the form or appearance of a material but does not make the material into another substance |
Chemical Equation | a short, easy way to show a chemical reaction, using symbols instead of words |
Decomposition Reaction | a chemical reaction that breaks down compounds into simpler substances |
Replacement Reaction | a reaction in which one element replaces another element in a compound, or when two elements in different compounds trade places |
Fuel | a material that releases energy when it is burned |
Created by:
Mrs. Klein
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