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Q2W6CHEM

REACTIONS

QuestionAnswer
Chemical equation A balanced chemical equation shows that the number of atoms in the reactants is the same as the number of atoms in the products.
Chemical reaction A process in which one or more substances are changed into other substances. Chemical reactions always involve a change in energy; energy is either given off or absorbed.
Combustion Carbon combining with oxygen to form carbon dioxide.A fire is an example of a combustion reaction.
Decomposition Breaking down a substance into simpler substances.Decomposition is opposite of a synthesis reaction
Displacement Switching one substance for another.In a single displacement reaction, one metal is usually replaced with another.In a double displacement reaction, two elements usually switch places.
Endothermic A chemical reaction that absorbs heat.A cold pack works by absorbing energy from the surroundings, thus making it endothermic and cold.
Exothermic A chemical reacting that gives off heat.A fireworks explosion is an example of an exothermic reaction.
Products Substances produced by a chemical reaction; written on the right side of a chemical equation. Hydrogen and oxygen are the products in the following equation
Reactants Substances produced by a chemical reaction; written on the right side of a chemical equation.Hydrogen and oxygen are the products in the following equation
Synthesis Combining substances to form a new substance.The rusting of metal is an example of a synthesis reaction.
Thermic Having to do with heat. All chemical reactions have some thermic properties, whether they lose or gain heat.
Created by: Ruth.Miller
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