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Ch.2 (Bio-Chem)

Vocab

WordDefinition
atom smallest basic unit of matter
element one particular type of atom (cannot be broken down any smaller)
compound a substance made of atoms linked/bonded together
ion atom has gained/lost electron(s)
ionic bonds forms from the electrical force between oppositly charged ions(btween metals&non-metals)
covalent bonds forms when atoms SHARE electrons (strong)
molocule 2 or more atoms held together by covalent bonds
hydrogen bond attraction btween slightly pos. atom and a slightly neg. atom (water molocules&DNA)
cohesion attraction among molocules of a substance
adhesion attracion among molocules of diff substances
solution mix of subtances that's the same throughout(homogeneous mix)
solvet The "big" substance(water)
solute "put into" solvent
acid low pH/ high concentration of H+
base High pH/ low concentration of H+
pH Measures a solution's acidity(or H+ concentration)
monomer a subnit in the complete molocule
polymer a molocule made of many monomers
Carbohydrates molocules composed of carbon, hydrogen, annd oxygen (sugars & starches)
Lipids non-polar molecules(fats, oils, and cholesteral)
Fatty acids chains of carbon atoms bonded to hydrogen atoms(saturated/unsaturated)
protien made up of amino acids
amino acid molocules that contain carbon, oxygen, nitrogen, and sometimes sulfur
nucleic acids DNA/RNA, make protiens
Created by: studyingat
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