Term
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Definition
basic unit of matter
'unable to cut' |
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Term
| atom's subatomic particles |
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Definition
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Term
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Definition
| center of atom- contains protons and neutrons |
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Definition
| negative charge- surrounds outside the nucleus |
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Definition
| positive charge, located in neuclus |
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Term
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Definition
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Term
| atoms have a ____ chage because... |
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Definition
| atoms have a NEUTRAL charge because it has the SAME NUMBER of PROTONS and ELECTRONS |
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Term
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Definition
| pure substance containing only one type of atom |
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Term
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Definition
-# is how many protons
-# ishow many electrons
-Mass-# is # of neutrons |
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Term
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Definition
| an element with a different # of neutrons |
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Term
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Definition
| large number underneith element's symbol |
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Term
| what makes all isotopes have the same chemical properties |
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Definition
| they all have the same # of electrons |
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Term
| 3 purposes of isotope radiation |
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Definition
-treat cancer
-kill bacteria that causes food to spoil
-find age of rocks/fossils |
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Term
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Definition
| substance formed by chemical combination of 2+ elements |
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Term
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Definition
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| 2 types of chemical bonds |
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Definition
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Term
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Definition
| bond involving transfering electons |
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Term
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Definition
| atoms that have lost or gained electrons |
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Term
| An ion that has lost electrons is now ___ charged |
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Definition
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Term
| an atom that has gained electrons is now ___ charged |
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Definition
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Term
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Definition
| bond in which atoms share electrons |
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Term
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Definition
| atoms joined together by covalent bonds |
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Term
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Definition
| large molecules attracted together (not as strong as an ionic/covalent bond) |
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Term
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Definition
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Term
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Definition
| a molecule thats charges are unevenly distributed (positve side and negative side) |
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Term
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Definition
| molecule bonding with hydrogen |
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Term
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Definition
| an attraction between molecules of same substance |
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Term
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Definition
| water is extremely cohesive- so it draws inward towards itself |
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Term
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Definition
attraction between different molecules.
example: water is attracted to its container, resulting with a dip |
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Term
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Definition
| water rising in a thin tube (against gravity) |
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Term
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Definition
| 2+ elements mixed together (not chemically combined) |
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Term
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Definition
| evenly distributed mixture (dissolved) |
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Term
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Definition
substance being dissolved
example: salt in saltwater |
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Term
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Definition
substance that dissolves solute
exmaple: water in saltwater |
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Definition
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Term
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Definition
| mixture where substances do not dissolve completely |
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Term
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Definition
| concentration of H+ ions in a solution |
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Term
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Definition
| acidic (produces H+ ions) |
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Definition
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Definition
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Term
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Definition
more H+ ions than pure water
below pH 7 |
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Term
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Definition
less H+ ions than water
produces OH- ions
pH above 7 |
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Term
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Definition
| weak acid/base that reacts with strong acid/base to prevent sudden changes in pH |
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Term
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Definition
| study all compounds that contain bonds between carbon atoms |
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Term
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Definition
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Term
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Definition
| large compounds built by joining smaller ones together |
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Definition
| small units linked together to make polymers |
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Term
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Definition
| large molecules made from monomers |
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Term
| 4 groups of organic compounds found in living things |
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Definition
1. carbohydrates
2. lipids
3. nucleic acid
4. proteins |
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Term
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Definition
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Term
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Definition
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Term
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Definition
| macromolecules formed from monosaccharides |
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Term
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Definition
store energy
waterproof covering |
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Term
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Definition
| contains maximum possible # of hydrogen atoms |
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Term
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Definition
| store/transmit heredity/genetic information |
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Term
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Definition
| combines to make nucleic acid |
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Term
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Definition
| nucleic acid that contains sugar ribose |
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Term
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Definition
| nucleic acid that contains sugar deoxyribose |
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Term
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Definition
forms bone and muscle
fights disease |
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Term
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Definition
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Definition
| changes one set of chemicals into another |
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Term
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Definition
| elements/compounds that enter a chemical reaction |
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Term
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Definition
| element/compound produced by a chemical reaction |
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Term
| chemical reaction involve |
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Definition
| breaking bonds & forming new bonds |
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Term
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Definition
| energy needed to get a reaction |
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Term
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Definition
| speeds up rate of a chemical reaction |
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Term
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Definition
| speeds up chemical reactions- a protein catalyst |
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Term
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Definition
| reactants of enzymes reactions |
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