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21 Cards in this Set

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Atom
Smallest unist of matter that cannot be broken by chemical means.
Electron Cloud
region of an atom where electrons are most likely to be found.
Proton
Positively charged Particle
Element
substance made of only one kind of atom and is a pure substance.
Isotope
Different number of neutrons compared to protons.
Chemical Bond
A Force that joins atoms
Compound
Substance made of the joined atoms of two or more different elements.
Molecule
Group of atoms held together by covalent bonds
Nonpolar molecules
equal distribution of electrical charge.
Hydrogen Bond
Weak chemical attraction between polar molecules
Ion
Atom or molecule that has gained or lost one or more electrons.
Covalent Bonds
Share Electrons
Cation
Positive Ion
Anion
Negative Ion
Cohesion
Attraction between substances of the same kind
Adhesion
Attraction between different substances.
Solution
Mixture in which one or more substances are evenly distributed in another substance.
Acid
Compounds that form hydrogen ions when dissolved in water.
Bases
Compounds that reduce the concentration of hydrogen ions in a solution
Polarity
Enables many substances to dissolve in water
Surface Tension
The surface of the water links together by hydrogen bonds.