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Ch 2.1 Vocabulary

The Chemistry of Life - The Nature of Matter

TermDefinition
Atom the basic unit of matter
Nucleus the center of an atom, which contains the protons and nuetrons; in cells, the structure that contains the cell's genetic material in the form of DNA
Electron negatively charged particle; located in the space surrounding the nucleus
Element pure substance that consists entirely of one type of atom
Isotope one of several forms of a single element, which contains the same number of protons but different number of neutrons
Compound substance formed by the chemical combination of two or more elements in definite proportions
Ionic Bond chemical bond formed when one or more electrons are transferred from one atom to another
Ion atom that has a positive or negative charge
Covalent Bond type of bond between atoms in which the electrons are shared
Molecule smallest unit of most compounds that displays all the properties of that compound
Van der Waals forces slight attraction that develops between oppositely charged regions of nearby molecules
Created by: user-1875214
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