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bio 112 ch2

QuestionAnswer
Chemistry the composition of substances and how they change
Matter anything that has weoght and space
elements all matter is composed 90 naturally occur
atoms elements are composed of
most abundant elements are CHON oxygen; carbon; hydrogen; nitrogen
protons positive charge
neutrons nutral / no charge
electrons negitive
shell numbers 2; 8; 18
ionic bond attracts / give;take/ opposite charge/ weak bond
covalent bonds when atoms share electrons to be come stable/ strong bond
chemical reactions as bonds are formed or broken between atoms, ions, molecules
neutral solution ph of 7
acidic solution ph of 0-6
basic solution ph of 8-14
inorganic CANT touch or feel
organic CAN touch or feel
carbohydrates energy CHO monosaccharides disaccharides polysaccharides
lipids fats phospholipids steroids
protiens everything else CHON
RNA ribonucleic acid guanine adenine cytosine URACIL
DNA deoxyribonucleic acid cytosine guanine adenine THYMINE
Created by: lilalice
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