Biology Chapter 2
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| atom (2.1) | smallest basic unit of matter
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| element (2.1) | substance made of only one type of atom that cannot be broken down by any chemical means
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| compound (2.1) | substance made of atoms of different elements that are bonded together in a particular ratio
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| ion (2.1) | atom that has gained or lost one or more electrons
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| ionic bond (2.1) | chemical bond formed between the electrical force between oppositely charged atoms
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| covalent bond (2.1) | chemical bond formed when two atoms share one or more pairs of electrons
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| molecule (2.1) | two or more atoms held together by covalent bonds; not necessarily a compound
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| hydrogen bond (2.2) | attractive between a slightly positive hydrogen atom and a slightly negative atom
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| cohesion (2.2) | attraction between molecules and the same substance
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| adhesion (2.2) | attraction between molecules and different substances
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| solution (2.2) | mixture that is consistent throughout; also called a homogeneous mixture
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| solvent (2.2) | substance in which solutes dissolve and are present in greatest concentration in a solution
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| solute (2.2) | substance that dissolves in a solvent and is present at a lower concentration than a solvent
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| acid (2.2) | compound that donates a proton (H') when dissolved in a solution
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| base (2.2) | compound that accepts a proton (H') when dissolved in a solution
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| pH (2.2) | measurement of acidity; related to free hydrogen ion concentration in solution
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| monomer (2.3) | molecule sub unit of a polymer
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| polymer (2.3) | large, carbon-based molecule formed by monomers
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| carbohydrate (2.3) | molecule composed of carbon, hydrogen, and oxygen; includes sugars and starches
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| lipid (2.3) | non polar molecule composed of carbon hydrogen, and oxygen; includes fats and oils
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| fatty acid (2.3) | hydrocarbon chain also bonded to glycerol in a liquid
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| protein (2.3) | polymer composed of amino acid formed by peptide bonds; folds into a particular structure depending on bonds between amino acids
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| amino acid (2.3) | molecule that makes up proteins; composed of carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur
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| nucleic acid (2.3) | molecule of nucleotide; the genetic material of organisms
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| chemical reaction (2.4) | processes by which substances change into different substances through the breaking and forming of chemical bonds
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| reactant (2.4) | substance that is changed by a chemical reaction
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| product (2.4) | substance formed by a chemical reaction
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| bond energy (2.4) | amount of energy needed to break a bond between two particular atoms; or the amount of energy released when a bond forms between two particular atoms
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| equilibrium (2.4) | conditions in which reactants and products of a chemical reaction are formed at the same rate
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| activation energy (2.4) | energy input necessary to initiate a chemical reaction
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| exothermic (2.4) | chemical reaction that yields a net release of energy in the form of heat
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| endothermic (2.4) | chemical reaction that requires a net input of energy
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| catalyst (2.5) | substance that decrease activation energy and increases reaction rate in a chemical reaction
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| enzyme (2.5) | protein that catalyzes chemical reactions for organisms
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| substrate (2.5) | reactant in a chemical reaction upon which an enzyme acts
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You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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