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Chem Formula & Equat

Chemical vs. Phys Change, Formula and Equations

QuestionAnswer
What is the term used to indicate the number of molecules? Coefficient
What is the term used to indicate the number of atoms of a particular element? Subscript
What is the term used to describe the molecules present before a chemical reaction? Reactants
What is the term used to describe the molecules present after a chemical reaction? Products
What is the term used for a change that occurs, but the substance is still the same? Physical Change
What is the term used for a change where new substances are formed? Chemical Change
What is the term used to describe a solid that is produced during a chemical reaction? Precipitant
What is the term used to describe burning? Combustion
What is the term used to describe the process of oxygen reacting with a substance? Oxidation
What is the term used to describe the production of heat or light during a chemical reaction? Exothermic
What is the term used to describe the absorption of heat or energy during a chemical reaction, leaving the reaction container feeling cold. Endothermic
A term used to describe an atom's ability to combine with other elements. reactivity
Law which states that m ass (matter) cannot be created nor destroyed. A chemical reaction does not gain or lose mass in a chemical reaction. Conservation of Mass (Matter)
Two or more elements chemically bonded. Molecule
Two or more different elements which are chemically combined. Compound
Created by: lauriemerrick
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