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Matter
anything that has mass and occupies space
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Atom
The smallest part of an element
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cell
most basic unit of life
4
Isotopes
2 or more forms of the same element
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Valence Electrons
electrons in the outermost energy level
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compound
2 or more atoms of different elements bonded together
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molecule
2 or more atoms covalently bonded together
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cation
forms when an atom losses an electron, it becomes more positively charged.
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Anion
forms when an atom gains an electron it becomes more negatively charged
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surface tension
tendency of molecules of the same "kind" to stick together
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solution
uniform mixture of 2 or more substances
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solvent
dose the dissolving
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hydrophilic
has an affinity for water
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hydrophobic
dose not have an affinity for water