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acids:a chemical that neutralizes alkalis
bases: breaks apart into hydroxide ions and a positive ion.

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buffers: compound that prevents sudden changes to the pH of a solution.

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Solutions: what is being dissolved in a substance
Suspensions: small particles in a solution that may settle over time

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heat capacity: number of heat units needed to raise the temperature of a body by one degree.

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Cohesion: clinging of like molecules
Adhesion: clinging of unlike molecules

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polarity: an element that has 2 opposite electrical charges.
Ex: water

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the attraction force between hydrogen atom to two different electronegative atoms of a different molecule

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Van der Waals Forces: slight attraction between uncharged molecules.

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Chemical compounds: a substance of 2 or more elements coming together into a mixture
chemical bonds: attraction between atoms that form a chemical compound

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Isotopes: 2 or more forms of the same element that have the same number of protons but different number of neutrons.

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Atomic number: the number of protons in a nucleus which determins the chemical properties of the element
Mass number: the number of both protons and neutrons in a nucleus

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protons and neutrons are inside the nucleus of the atom and electrons are on the outside of the nucleus.