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Bio Vocab Unit 1 #1
vocabulary words for unit 1 part 1 of 2
Question | Answer |
---|---|
atoms of the same element with a different number of neutrons | isotope |
bonds formed when one or more electrons are transferred from one atom to another | ionic bond |
bonds formed when electrons are shared between atoms | covalent bond |
a molecule in which the charges are unevenly distributed | polar |
an attraction between molecules of the same substance | cohesion |
an attraction between molecules of different substances | adhesion |
a material composed of two or more elements or compounds that are physically mixed together but not chemically combined | mixture |
substances that are dissolved | solute |
a mixture of two or more substances in which all of the components are evenly distributed | solution |
the substance in which the solute dissolves | solvent |
mixture of water and non-dissolved materials | suspension |
any compound that forms H+ ions in solution | acid |
compound that produces hydroxide ions (OH-) in solution | base (alkaline) |
indicates the concentration of H+ ions in solution | pH scale |
weak acids or bases that can react with strong acids or bases to prevent sharp, sudden changes in pH | buffers |
atom that has a positive or negative charge | ions |
large molecules in cells made from thousands or hundreds of thousands of smaller molecules | macromolecules |