Science Word Scramble
|
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Term | Definition |
Chemistry | The study of the property of matter changes |
Element | A substance that cannot be broken down into any other substances by chemical or physical means . |
Compound | A substance made of two or more elements chemically combined in a specific ration, or proportion . |
Mixture | Made from two or more pure substances - elements , compounds , or both. |
Solution | well-mixed mixture |
Physical Change | A change that alters the form or appearance of a material but does not make the material into another substance is called a physical change . |
Chemical Change | A change in matter that produces new substances |
Precipitate | A solid that forms from solution during a chemical reaction |
Atom | The smallest particle of an element |
Molecule | Combination of two or more atoms |
Chemical Bond | Force that holds atoms together . |
Chemical Equation | Shorter , easier way to show chemical reactions , using symbols instead of words . |
Symbol | Most elements are represented by a one-letter or two-letter symbol |
Chemical Formula | Shows the ratio of elements in the compound . |
Subscript | Shows the number of atoms of an element in a molecule |
Reactants | Materials that you have at the beginning of a chemical reaction |
Conservation of Matter | Principle stating that matter is not created or destroyed during a chemical reaction . |
Coefficient | Number in front of a chemical formula in the equation . |
Synthesis | When two or more substances combine to make a more complex substance . |
Decomposition | Breaks down compounds into smaller products |
Replacement Reaction | Reaction in which one element replaces another in a compound or in which two elements in different compounds trade places . |
Exothermic Reaction | Reaction that releases energy in the form of heat |
Endothermic Reaction | A reaction that absorbs energy . |
Activation Energy | Minimum amount of energy that has to be added to start a reaction . |
Concentration | Amount of one material in a given volume of another material . |
Catalyst | Material that increases the rate of a reaction by lowering the activation energy . |
Enzymes | Provide a surface on which reactions take place |
Inhibitor | Material used to decrease the rate of a reaction . |
Combustion | Rapid reaction between oxygen and a substance called a fuel |
Fuel | Material that releases energy when it burns |
Created by:
Thatcrazyasian
Popular TOEFL sets