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Chapter 7 Ms.Garcia
For Ms.Garcia
12
Science
8th Grade
12/30/2011

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Term
Chemical reaction (front of card)
Definition
A chemical reaction produces new substance by changing the way in which atoms are arranged. (back of card)
Term
Reactant
(front of card)
Definition
Reactant are the substance present at the beginning of chemical reaction. (back of card)
Term
Products
(front of card)
Definition
Products are the substance formed by a chemical reaction. (back of card)
Term
Precipitate
(front of card)
Definition
A solid product called a Precipiate may form when chemicals in two liquids react. (back of card)
Term
Catalyst
(front of card)
Definition
A Catalyst is a substance that increases the rate of a chemical reaction but is not itself concumed in the reaction. (back of card)
Term
Law of Conservation of Mass
(front of card)
Definition
Law of Conservation of Mass, states that in a chemical reaction atoms are neither created nor destroyed. (back of card)
Term
Coefficient
(front of card)
Definition
Coefficient indicate how many molecules take part in the reaction. (back of card)
Term
Bond energy
(front of card)
Definition
The energy associated with Bonds is called Bond energy. (back of card)
Term
Exothermic reaction
(front of card)
Definition
A reaction in which energy is released is called an Exothermic reaction. (back of card)
Term
Endothermic reaction (front of card)
Definition
A reaction in which energy is absorbed is called an Endothermic reaction. (back of card)
Term
Photosynthesis (front of card)
Definition
Photosynthesis, plants absorb energy from sunlight to turn carbon dioxide and water into oxygen and glucose, which is a type of sugar molecule. (back of card)
Term
Respiration (front of card)
Definition
Living cells obtain energy from glucose molecules through the process of Respiration, which is the "combustion" of glucose to obtain energy. (back of card)
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