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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 |