Chapter 2 Flashcards
Precipitate
a solid substance that is formed in a solution
Chemical Reaction
a process in which one or more substances change to make one or more new substances
Chemical Formula
a combination of chemical symbols and numbers to represent a substance
Chemical Equation
chemical symbols and formulas as a shortcut to describe a chemical reaction
Reactant
a substance or molecule that participates in a chemical reaction
Product
the substance that forms in a chemical reaction
Law of Conservation of Mass
the law that states that mass cannot be created and destroyed in ordinary chemical and physical changes
Synthesis Reaction
a reaction in which two or more substances combine to form a new compound
Decomposition Reaction
a reaction in which a single compound breaks down to form two or more simpler substances
SIngle-Displacement Reaction
a reaction in which one element or radical takes the place of another element or radical in a compound
Double-Displacement Reaction
a reaction in which a gas, a solid, precipitate, or a molecular compound forms from the exchange of ions between two compounds
Exothermic Reaction
a chemical reaction in which heat is released to the surroundings
Endothermic Reaction
a chemical reaction that requires heat
Law of Conservation of Energy
the law that states that energy cannot be created nor destroyed but can be changed from one form to another
Activation Energy
the minimum amount of energy required to start a chemical reaction
