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Ch 21 Int Sc
Types of Reactions
Question | Answer |
---|---|
What is addition reaction? | A chemical reaction in which two or more substances combine to form a new compound. |
What is combustion reaction? | A reaction in which a substance combines with oxygen, releasing large amounts of enegyh in the form of heat and light. |
What is decomposition reaction? | A chemical reaction in which a single compound is broken down to produce two or more smaller compounds. |
What is dissolution reaction? | A reaction that occurs when an ionic compound dissolves in water to make an ionic solution. |
What is double-displacement reaction? | A reaction in which ions from two compounds in a solution exchange places to produce two new compounds. |
What is endothermic reaction? | A reaction in which more energy is required to break the bonds in reactants than is released from the formation of new bonds in the products. |
What is exothermic reaction? | Occurs when less energy is required to break the bonds in reactants than is released when bonds are formed to make new products. |
What is insoluble? | A term to describe a substance that does not dissolve in water. |
What is polymerization? | The production of very large molecule by a series of synthesis reactions. |
What is precipitate? | Substance formed when one of the compounds in a double-displacement reaction is insoluble, or does not dissolve in water. |
What is single-displacement reaction? | A reaction in which one element replaces a similiar element in a compound. |
What are examples of polymers you may find around the house? | Foam containeers, food packagin, clothing, plumbing, and chewing gum. |
In combustion reaction, what kind of substances can combine with oxygen to release energy? | Wood, natural gas, or propane. |
In combustion reaction, what kind of energy can be released? | Light and heat. |
What is a monomers? | Smaller molecules. |
What is a polymers? | Made by joining smaller molecules called monomers. |
What are examples of exothermic reactions? | The combustion of gasoline to run automobiles and the formation of rust. |
How do we use exothermic reaction? | Heat our homes, drive our cars and cook our food. |