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chemical reaction/
key terms for chemical reactions and acids/bases
| Question | Answer |
|---|---|
| acid | a substance that tastes sour, reacts with metals and carbonates, and turns litmus paper red |
| base | a substance that tastes bitter, feels slippery, and turns litmus paper blue |
| chemical equation | a short, easy way to show a chemical reaction, using symbols instead of words |
| chemical reaction | the process in which substances undergo chemical changes that results in the formation of new substances |
| chemical formula | a combination of symbols that represent elements in a compound |
| chemistry | the study of the properties of matter and how matter changes |
| 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 an reaction |
| corrosive | the way in which acids react with some metals so as to eat away the metal |
| decomposition | a chemical reaction that breaks down compounds into simpler products |
| indicator | a compound that changes color in the presence of an acid or base |
| pH scale | a range of numbers used to express the concentration of hydrogen ions in a solution |
| product | a substance formed as a result of a chemical reaction |
| reactant | a substance that enters into a chemical reaction |
| replacement | a reaction in which one element replaces another in a compound; or when two elements in different compounds trade places |
| subscript | a number in a chemical formula that tells the number of atoms in a molecule or the ratio of elements in a compound |
| synthesis | a chemical reaction in which two or more simple substances combine to form a new, more complex substance |