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Science unit 3
chemical interactions 3
11
Science
7th Grade
01/12/2011

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Cards

Term
Bond energy
Definition
The energy associated with bonds
Term
Catalyst
Definition
A substance that increases the rate of a chemical reaction but is not consumed in the reaction
Term
Chemical reaction
Definition
produces new substances by changing the way in which atoms are arranged
Term
Covalent bond
Definition
A pair of shared electrons between 2 atoms
Term
Endothermic reaction
Definition
A reaction in which energy is absorbed
Term
Exothermic
Definition
A reaction in which energy is released
Term
Ionic bond
Definition
The force of attraction between positive and negative ions
Term
Molecule
Definition
A group of atoms held together by covalent bonds
Term
Photosynthesis
Definition
When plants absorb energy from sunlight to turn carbon dioxide and water into oxygen
Term
Precipitate
Definition
a solid substance that forms as a result of a reaction between chemicals in 2 liquids
Term
subscript
Definition
Little number below chemical symbol
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