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

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Cohesion is an attraction between molecules of the same substance.

Adhesion is attraction between molecules from a different substance.

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A molecule is like a magnet in the respect that it has positively and negatively charged sides.
these sides would be referred to as poles which is where polarity comes from

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A hydrogen bond is an attractive force between a negative atom of a different molocule and a positive hydrogen   molecule.

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Liquids are measures with the pH scale. On the pH scale a liquid is neutral with a pH of 7. The liquid would be acidic with a pH below 7. The liquid would be a base with a pH above

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Buffers are weak acids or bases that can react with strong bases and acids to prevent sharp, sudden changes in pH.

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A mixture is composed of two or more elements or compounds. A solvent is a substance in which the solute dissolves. A solute is what is dissolved in a solvent. Solutions are evenly dissolved and suspensions are undis

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Weak attractive forces between uncharged molecules, geckos are able to climb things because of the van der waals force. It is a relitively weak bond.

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Compounds are formed by two or more elements indefinite proportions. Valence electrons form chemical bonds. An ionic and is formed when one or more electrons are transferred from one atom to another. A covalent bond is when electrons are shared between atoms.

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Isotopes are atoms of the same element that differ in the number if neutrons they contain. Isotopes are identified by mass number. Some isotopes are radioactive.

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The atom number is the number of protons in the nucleus, which determines where it goes on the periodic table. The atomic mass is the total number of protons and neutrons in an atomic nucleus.

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Protons (+) and neutrons (neutral) make up the nucleus of an atom. Electrons (-) are constantly moving outside of the nucleus.