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Biomolecules

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Term
Definition
1. Atom   Smallest unit of life.  
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2. Element   Atoms of all the same size and number of protons  
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3. Molecule   2 or more atoms of different elements bonded together.  
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4. Compound   2 or more atoms covalently bonded together  
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5. Atomic number   Number of p+  
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6. Mass number   The sum of the p+ and n0  
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7. Atomic weight   Relative atomic mass  
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8. valence electron   The electrons in the outermost energy level  
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9. Electron   Negative charged  
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10. Proton   Positive charged  
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11. Neutron   No charge  
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12. Isotope   Two or more forms of the same element that have an equal amount of protons but an unequal amount of neutrons  
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13. Radioisotope   A radioactive isotope.  
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14. Electron configuration   The distribution of electrons in an atom or molecule in atomic or molecule orbitals.  
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15. Bond   There are covalent bonds and ionic bonds  
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16. Polar bond   Electronegativity is between 0.5 and 2.0.  
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17. Nonpolar bond   Electronegativity is less than 0.5.  
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18. Hydrogen bond   Formed between a highly electronegative atom of a polar molecule and a hydrogen atom.  
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19. Solvent   Substance that dissolves solute.  
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20. Solution   Mixture that forms when a substance is dissolved by another one.  
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21. Solute   Substance that's dissolveable.  
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22. Hydrophobic   Substance that has an affinity for water, "loves" water and dissolves easily in water.  
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23. Hydrophilic   Substance that doesn't have an affinity for water, is "scared" of water and doesn't dissolve in water.  
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24. Amino acid   Monomers of Proteins.  
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25. Nucleotide   Monomers of Nucleic Acids.  
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26. Peptide bond   A covalent bond of Amino Acids.  
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27. Lipid   Fatty acid molecules consisting of two distinct regions: A long hydrophobic chain and a hydrophilic head  
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28. Saturated fat   Lipid that is bad for you; has no double bonds; contains lots of hydrogen.  
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29. Saccaride   Monomer of carbohydrates, which is simply sugar.  
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30. Specific heat (water)   The amount of heat needed to increase or decrease the temperature of a substance by 1 Celsius degree.  
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