science chapter 15 Sheldon
Terms
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- chemical reaction
- the process by which one or more substances undergo change to produce one or more different substances
- chemical formula
- a shorthand notation for a compund or a diatomic element using chemical symbols and numbers
- subscript
- a number written below and to the right of a chemical symbol in a formula.
- chemical equation
- a shorthand descripiton of a chemical reaction using chemical formulas and symbols
- reactants
- the stating materials in a chemical reaction
- products
- the substances formed from a chemical reaction
- coefficient
- a number placed in front of a chemical symbol or formula
- law of conservation of mass
- the law that states that mass is neither created nor destroyed in ordinaryh chemical and physical changes
- synthesis reaction
- a reaction in which two of more substances combine to form a single compound
- decomposition reaction
- a reaction in which a single compound breaks down to form two or more simpler substances
- single-replacemen reaction
- a reaction in which an element takes the place of an element in a compound
- double-replacement reaction
- a reaction in which ions in two compounds switch places
- exothermic
- the term used to describe a change in which energy is released or removed
- endothermic
- the term used to describe a change in which energy is absorbed
- law of conservation of energy
- the law that states that energy is neither created nor destroyed