Chapter 2 Flashcards
(11 cards)
Atom
The basic unit of matter
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Nucleus
The center of an atom, which contains the protons, neutrons, and DNA.
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Electron
Negatively charged particle located in space surrounding nuclei.
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Element
Pure substances that consist entirely of one type of atom.
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Isotopes
One of several forms of a single element, which contains some number of protons but a different number of neutrons.
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Compound
Substance formed by the chemical combination of two or more elements in definite proportions.
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Ionic Bond
Chemical bond formed when one or more electrons are transferred from one atom to another.
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Ions
Atoms that have a positive or negative charge.
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Covalent Bond
Type of bond between atoms in which the electrons are shared.
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Molecule
Smallest unit of most compounds that displays all the properties of that compound.
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Van der Waals forces
Slight attraction that occurs between oppositely charged regions of nearby molecules.
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