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Bio Terms
Bio Terms
10
Biology
9th Grade
10/28/2014

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Term
Atom
Definition
The atom is made up of Protons,Neutrons, and Electrons
Term
Nucleus
Definition
Is at the center of the atom
Term
Electron
Definition
Is a negatively charged particle
Term
Element
Definition
Is a pure substance that entirely consists of one type of atom
Term
Isotopes
Definition
The total number of protons and neutrons in the nucleus
Term
Compound
Definition
Is a substance formed by the chemical combination of two or more elements in define proportions
Term
Ionic Bond
Definition
Is formed when one or more electrons are transferred from one atom to another
Term
Covalent Bond
Definition
When the atoms share two electrons the bond is called a single covalent bond
Term
Molecule
Definition
Is the smallest unit of most compounds
Term
Van Der Waals Forces
Definition
Van Der Waals Forces can hold together molecules especially large molecules
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