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83 Cards in this Set
- Front
- Back
how many elements exist naturaly?
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92
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potassium
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K
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Nitrogen
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N
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Carbon
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C
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Sulfer
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S
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Potassium
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K
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Magnisium
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Mg
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Boron
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B
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chlorine
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Cl
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Cobalt
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Co
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atoms
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smallest part of an element that still has the properties of the element
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electron
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negitivly charged particle on the outside of atom
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atomic number
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number of protons in the atom
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how many electrons are in a full outer shell?
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2 or 8
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oxidation
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a reaction that results in the loss of electrons.
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ion
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an atom that has lost or gained electrons
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negitive ion
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an atom with more electrons then protons
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molecules
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a group of atoms
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chemical formula for glucose
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C6H12O6
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oxygen gas
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O2
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dalton
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the weight of one hydrogen atom
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what type of bond is sodium chloride?
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ionic bond
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what kind of bond does Methane have?
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covalent
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single bond
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one pair of electrons shared in a acovalent bond
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what type of bond holdsDNA strands together?
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Hydrogen bond
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element
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fundemental substance that connot be broken down.
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Sodium
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NA
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iron
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Fe
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Oxegen
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O
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What elements make up 90% of the body's weight?
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Carbon, oxygen, hydrogen, nitrogen
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Phosphorus
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P
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calcium
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Ca
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Copper
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Cu
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Zinc
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Z
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Manganese
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Mn
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Iodine
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I
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Proton
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a positivly charged particle in the center of the atom
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neutron
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neutral charge same weight as proton on the inside of the atom
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mass number
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the total of protons and neutrons
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inert elemant
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an atom of an element with a full outer shell.
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reduction
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a reaction that results in the addition of electrons
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possitive ion
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an atom with with less electrons then protons
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isotopes
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diffrent nuber of neutrons then the element.
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compound
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a group of molecules
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hydrogen gas
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H2
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molecular weight
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the atomic weights of all atoms involved in the molecule
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ionic bond
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when the electrons of one atom transfer to another
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covalent bond
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a bond where two atoms share one or more electrons
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double bond
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two pairs of electrons shared in a covalent bond
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hydrogen bond
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a weak bond between protons and free electrons
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what type of bond is also know as an electrostatic bond?
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hydrogen bond
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chemical reaction
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when molecules interact to form new bonds
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reactants
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the molecules that enter into a reaction
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products
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what is formed in a chemical reaction
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acid
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a compound that releases hydrogen atoms when placed in water
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bases
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a compound taht attracts hydrogen atoms when placed in water.
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3 strong acids
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hydrochloric, sulfiric, nitric
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NaOH
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sodium hydroxide
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KOH
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potasium hydroxide
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2 strong bases
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sodium hydroxide, potassium hydroxide
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pH
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the consentrstion of hydrogen ions
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pH of less then 7.0
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acid
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pH of more then 7.0
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base
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what does each number in the pH system mean compared to the number next to it?
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from 7 the decimal point moves one digit. the lower the pH the decimal moves to the right. Above it moves to the left.
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what are the 4 major catagories of compounds in living things?
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carbs, lipids, protiens, nucleic acids
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carbs
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structural materisl and energy sorce
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what is a carb composed of?
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carbon, hydrogen, oxygen ration ofhydrogen to oxygen 2:1
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saccharides
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carbs
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monosaccharides
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simple sugars
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glucose
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the basic fuel for the body
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C6H12O6
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glucose
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C6H12O6
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glucose
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glucose
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the basic fuel for the body
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C6 H12 O6
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glucose, fructosee,galactose same formula diffrent arangement
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isomer
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a molecule that has the same make up but diffrent arrangment
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disaccharides
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2 monosacchride molecules conected by a covalent bond
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maltose
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2 glucose resulting from the break down of starch in the mouth and the intestines
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sucrose
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glucose and fructose. table sugar
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lactose
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glucose and galactose. Milk sugar
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polysaccharides
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many monosaccharides together
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starches
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many glucose units together. storage system for carbs
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glycogen
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polysaccharide made of glucose. stored in liver
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cellulose
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polysachride made up of glucose. can only be broken down by a few bactiria. used as roughage in the body.
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