| Term | Definition |
|---|
| Mass-energy problems | __________ involve calculating the heat of reaction from the mass of materials in a reaction. |
| Reactants | _______ are the starting substances in a chemical reaction. |
| Synthesis | Two or more substances combine to form one new substance in ____________ reactions. |
| Chemical reaction | The process by which one or more substances are changed into one or more different substances is called a ________. |
| Mass-mass problems | __________ are calculations used to find the masses of materials involved in reactions. |
| Single displacement | In the chemical reaction known as _________, one element displaces another in a compound. |
| Stoichiometry | The quantitative study of chemical reactions such as mass –mass problems is called. |
| Decomposition | The breaking up of substances into simpler substances when energy is supplied is called _________. |
| Products | ________ is the term referring to the substances formed by a chemical reaction. |
| Double displacement | In _________ reactions, the positive and negative portions of two compounds are interchanged. |
| Percentage yield | The ______ of a product is expressed as actual amount of product over theoretical amount of product x 100% |
| Combustion | The reaction of an organic compound as it burns in air is called ___________. |
| Endothermic reaction | Any reaction who' products have more energy than the reactants; the container would feel could because the products take thermal energy out of the surroundings and absorb the energy into their chemical bonds |
| Exothermic reactions | Any reaction that gives off thermal energy; the products have less energy than the reactants |
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