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bio 1
bio 1
21
Biology
9th Grade
01/19/2012

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Term
a molecule that adds hydrogen ions to water.
Definition
Acid
Term
The basis of all physical things, formed of protons, neutrons, electrons, and other particles.
Definition
Atom
Term
a molecule that removes hydrogen ions from water
Definition
Base
Term
A substance that counteracts changes in pH; it removes hydrogen ions from acidic solutions and removes hydroxyl ions from alkaline solutions.
Definition
Buffer
Term
a material that latches onto reactants and holds them in positions that make it easier for chemical bonds to break or to form.
Definition
Catalyst
Term
Potential energy stored in the positions of electrons within molecules and ions.
Definition
Chemical energy
Term
a mutual attraction between two atoms that share a pair of electrons
Definition
Covalent
Term
A subatomic particle with a negative electric charge.
Definition
Electron
Term
The quantity of energy required to boost a chemical reaction so that it proceeds rapidly.
Definition
Energy of activation
Term
Kinetic energy in the form of random movements of molecules and ions.
Definition
Heat energy
Term
a mutual attraction between the electric charges of two polar molecules
Definition
Hydrogen bond
Term
An atom or molecule with an electric charge, because it has either more electrons or fewer electrons than protons.
Definition
Ion
Term
A mutual attraction between atoms that develops between a positively charged ion and a negatively charged ion.
Definition
Ionic
Term
Energy within the movement of objects
Definition
Kinetic
Term
Two or more atoms joined by chemical bonds
Definition
Molecule
Term
A subatomic particle with no electric charge
Definition
Neutron
Term
The ratio of hydrogen ions to hydroxyl ions within a watery solution
Definition
pH
Term
Stored energy that is capable of moving an object.
Definition
Potential energy
Term
A subatomic particle with a positive electric charge
Definition
Proton
Term
A space, within which electrons travel, that is a particular distance from the nucleus of an atom.
Definition
Shell
Term
A liquid that dissolves solids
Definition
Solvent
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