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basic building block of all matter |
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anything that has mass and volume
-living or nonliving |
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three parts of the atomic stucture |
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- protons
- neutrons
- electrons
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protons (sign and definition and location in atom) |
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p+
positive charge
found within the nucleus of an atom |
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neutrons (sign and definition and location in atom) |
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n0
no charge
found within the nucleus of an atom |
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electrons (sign and definition and location in atom) |
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e-
negative charge
found swirling around the nucleus |
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energy levels where electrons travel |
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how do you find the number of protons in an atom? |
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how do you find the number of electrons in an atom? |
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how do you find the number of neutrons in an atom? |
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atomic mass - atomic number |
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maximums of the first three e- energy levels |
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C H N O P S K Na Cl Mg Ca Fe |
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determine reactivity of an atom |
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atoms with 1-3 valence electrons tend to... |
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lose all valence electrons |
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atoms with 4 valence electrons tend to... |
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share their valence electrons |
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atoms with 5-7 valence electrons tend to... |
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gain as many valence electrons as needed to satisfy the octet rule |
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when atoms become stable they have... |
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achieved either the octet rule or the duet rule |
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purpose of the octet and duet rules |
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sharing of electrons to hold atoms together |
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result from the transfer of of valence electrons |
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pure substance (only one kind of atom) |
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electrons with a different number of neutrons |
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heavy hydrogen
(normal hydrogen has 0 neutrons, heavy hydrogen has 1) |
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- radio isotopes used in cancer treatment
- radio carbon dating of fossils
- kill bacteria on food
- radio isotopes used to "trace" movement throughout the body
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show number of atoms and the types of atoms |
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show number, kind, and arrangement of atoms in space |
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ions separate fro one another in solution |
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when NaCl (salt) enters H20 (water) the Na+ and the Cl- break apart from eachother |
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a solution where the hydrogen ions are greater than hydroxide ions |
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solution where the hydrogen ions are in lesser concentrations than hydroxide ions |
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rearrangement of atoms resulting in new products with their own physical and chemical properties |
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law of conservation of matter |
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states that matter can not be created nor destroyed, only rearranged into another form |
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single covalent bond C-C
double covalent bond C=C
triple covalent bond (has three lines between the two Cs) |
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have the same simple formula, but different structures |
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major 4 organic compounds |
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- carbohydrates
- lipids
- proteins
- nucleic acids
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building blocks of carbohydrates |
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simple formula for a monosaccharide |
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simple formula for a disaccharide |
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simple formula for a polysaccharide with 3 sugars |
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define lipid and give 2 examples |
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stored energy source
fats and oils |
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building blocks of lipids |
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glycerol and 3 fatty acid |
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single covalent bond hydrogen bonds |
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double covalent bonds with hydrogen and oxygen |
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what is always found in a protein that is not found in lipids and carbohydrates |
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building blocks of proteins |
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protein structure is determined by |
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- number of AA
- kind of AA
- arrangement of AA
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structure of protein determines |
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speeds up chemical reactions without changing the product |
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by covalent peptide bonds |
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joining of several amino acids |
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example of a nucleic acid |
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building blocks of nucleic acids |
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- 5 carbon sugars
- PO4
- nitrogenous - base
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