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Chemistry and biochem
From notes and book
45
Anatomy
12th Grade
01/11/2012

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Term
Matter
Definition
Anything that takes up space and has weight
(light, sound, magnetism)
Term
Three states if matter
Definition
Solids- something that has all a definite shape has mass
Liquids- takes shape of container but maintains its volume
Gases- no definite shape has constant mass (at a certain temperature)

Water can be all three
Term
Two types of changes that can occur to matter.
Definition
Physical changes- changing the apparent e not the chemical makeup (chopping a book)

Chemical changes- is where you literally alter the chemical make up of the object. (setting tree on fire)
Term
Element
Definition
Is the smallest part of a compound that exists
106 elements exists
92 naturally occurring elements
Term
Trace elements
Definition
Are naturally occurring elements that are required in certain amounts (small) on a daily basis
Term
Iodine
Definition
If you don't eat your daily amount you get goiter
In salt called iodized salt
Term
Atoms
Definition
The smallest part of an element that exists
Term
Atomic mass
Definition
The weight of an atom, the sum of the protonsn neutrons
Term
Atomic number
Definition
Equal to be the number of protons
Term
Isotopes
Definition
Variations of an element that have a different number of neutrons
Term
C14
Definition
Allows us to figure out how old it is
Term
Compound
Definition
2 or more elements that are chemically combined
Term
Chemical bonding
Definition
Electronmagmetic force that holds atoms together
Term
Ionic bonds
Definition
Are bonds between atoms in which elements exchange electrons.
Term
Covalent bonds
Definition
Share electrons
Term
Valence shell
Definition
The outermost shell of any atom
Takes 8 electrons does it take to fill the outer shell
Term
Hydrogen bond
Definition
Is a method in which hydrogen is either bonded with itself or bonded to other atoms formed by DNA
Term
Water
Definition
Expamda when it freezes
Absorbs heat
Temperature stays constant
Does not sink when frozen
Term
Ph scale
Definition
A measurement of hydrogen vs. hydroxide in a compound
Term
Organic compounds
Definition
The compound is made by living organisms
Anything that has carbon in It
Most are covalently bonded
Term
Salts
Definition
Break aparts easily in water
Vital to many body functions
Include electrolytes which conduct electrical currents
Term
Neutralization reaction
Definition
Acids and bases react to form water and a salt
Term
Carbon
Definition
Has four valence electrons can have 4 bonds with diff elements at the same time
Term
Carbohydrates
Definition
Sugars- major sources of energy which is ATP
Term
Proteins
Definition
Muscles, skin, teeth, bones, hair
Term
Lipids
Definition
Fats and oils
Term
Nucleic acids
Definition
DNA RNA
Makes ATP
Term
Molecular chains
Definition
Straight chains, branched chains, or rings
Term
Synthesis reaction
Definition
Smaller units are combined to form a larger molecule and water is removed
Term
Decomposition reaction
Definition
Large water molecules can be broken apart by adding water
Term
Isomers
Definition
Compounds that have the same formula but the elements are arranged diff
Term
Monosaccharide
Definition
Simplilest type of carb sugar (glucose, fructose, and galactose)
Term
Disaccharide
Definition
Double sugars
2 simple sugars joining through synthesis reaction
(sucrose,lactose, maltose)
Term
Polysaccharide
Definition
Largest car molecule composed of many monosaccharides subunits
(starch, glycogen,) used for storage
Term
Lipids
Definition
Cant dissolve in water ( not attracted to water molecules)
large bio molecules that area made mostly of carbon and hydrogen with a small amount of oxygen (steroids)
Term
Triglyceride
Definition
Made of 3 fatty acid molecules
Oils-liquid at room temperature (c=c) in plant seeds (good)
Fats-solid at room temperature (c-c) mostly in animals (harmful)
Term
Phosopholipids
Definition
Made of 2 fatty acids, phospholipid and a glycerol (cell membrane)
Term
Steroids
Definition
Made of 4 carbon rings not fatty acids (hormones, frog venom p, cholesterol)
Term
Proteins
Definition
Account for over half of the body's organic matter
Proves for constructing materials for body tissues
Act As enenzymes hormones and antibodies
Term
Enzymes
Definition
Act as a cataylists
Increases the rate of chemical reaction
Usually end in "ase"
Term
Amino acids
Definition
20 different amino acids which can make thousands of protiens
Peptide bonds holds amino acids together
Term
Nucleotides
Definition
Made of sugar
Made of phosphate=Po4
Nitrogenous Bose ( T, A, C, G)
Term
DNA
Definition
stands for deoxyribonucleic acid
Info coded in DNA contains instructions
Term
RNA
Definition
Ribonucleic acid
Term
ATP
Definition
Adenosine triphosphate
Makes energy replenished by oxidation of food fuels
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