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16 Cards in this Set
- Front
- Back
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atom
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smallest unit of matter
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charges
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protons= +
neutrons= neutral electrons= - |
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molecules
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smallest part of a compound
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compound
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matter composed of 2+ elements in a specific proportion
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HONC
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hydrogen- 1 bond
oxygen- 2 bonds nitrogen- 3 bonds carbon- 4 bonds ALL COVALENT |
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ionic bonds
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-formed by attractions between ions of opposite charge
-positive ion= cation -negative ion= anion -weaker than covalent |
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covalent bonds
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atoms join molecules by sharing valence electrons, stronger than ionic bonds
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hydrogen bonds
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-week bonds between oppositely charged regions of nearby molecules
-founds in water and DNA |
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water
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-single most abundant compound in biological organisms
-polar molecules -cohesion/ adhesion -surface tension |
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ph
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see diagram
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carbohydrates
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-1-2-1 ratio
-CHO -monosacrides and dissacharides |
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proteins
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-form chains that bend and fold
-CHON -amino acids, polypeptide chain |
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lipids
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store energy
hydrophobic non polar see chart |
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nucleic acids
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see chart
DNA and RNA |
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dehydration synthesis
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how cells link monomers to form polymers
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hydrolisis
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how polymers are broken down to form monomers
*opposite of dehydration synthesis |
