Beginning Study of Chemistry - chemical reactions, bonding, and water
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| 1625821744 | isotope | atoms of the same element with a different number of neutrons |  | 0 |
| 1625821745 | ionic bond | bonds formed when one or more electrons are transferred from one atom to another |  | 1 |
| 1625821746 | covalent bond | bonds formed when electrons are shared between atoms |  | 2 |
| 1625821747 | polar | a molecule in which the charges are unevenly distributed |  | 3 |
| 1625821748 | cohesion | an attraction between molecules of the same substance |  | 4 |
| 1625821749 | adhesion | an attraction between molecules of different substances |  | 5 |
| 1625821750 | mixture | a material composed of two or more elements or compounds that are physically mixed together but not chemically combined |  | 6 |
| 1625821751 | solute | substances that are dissolved |  | 7 |
| 1625821752 | solution | a mixture of two or more substances in which all of the components are evenly distributed | | 8 |
| 1625821753 | solvent | the substance in which the solute dissolves | | 9 |
| 1625821754 | suspension | mixture of water and non-dissolved materials |  | 10 |
| 1625821755 | acid | any compound that forms H+ ions in solution |  | 11 |
| 1625821756 | base (alkaline) | compound that produces hydroxide ions (OH-) in solution |  | 12 |
| 1625821757 | pH scale | indicates the concentration of H+ ions in solution |  | 13 |
| 1625821758 | buffers | weak acids or bases that can react with strong acids or bases to prevent sharp, sudden changes in pH |  | 14 |
| 1625821759 | ions | atom that has a positive or negative charge |  | 15 |
| 1625821760 | macromolecules | large molecules in cells made from thousands or hundreds of thousands of smaller molecules |  | 16 |
| 1625821761 | monomers | small unit that can join together with other small units to form polymers |  | 17 |
| 1625821762 | polymers | large compound formed from combinations of many smaller monomers | | 18 |
| 1625821763 | carbohydrates | compounds made up from carbon, hydrogen and oxygen atoms, usually in a ratio of 1:2:1.; used a s main source of energy |  | 19 |
| 1625821764 | monosaccharide | another name for simple sugars |  | 20 |
| 1625821765 | polysaccharides | large macromolecules formed from monosaccharide |  | 21 |
| 1625821766 | lipids | large and varied group of biological molecules that is generally not soluble in water. Made mostly from carbon and hydrogen atoms and used to store energy. |  | 22 |
| 1625821767 | saturated | the fatty acids contain the maximum possible number of hydrogen atoms - no double bonds |  | 23 |
| 1625821768 | unsaturated | the fatty acids dont contain the maximum possible number of hydrogen atoms - at least one double bond | | 24 |
| 1625821769 | nucleotides | Individual monomers that make up nucleic acids. Consist of three parts: a 5-carbon sugar, a phosphate group, and a nitrogenous base |  | 25 |
| 1625821770 | nucleic acids | Macromolecules containing hydrogen, oxygen, nitrogen, carbon, and phosphorus. Store and transmit hereditary or genetic information. |  | 26 |
| 1625821771 | proteins | Macromolecules that contain nitrogen as well as carbon, hydrogen, and oxygen; some control the rate of reactions and regulate cell processes, some are used to form bones and muscles, others transport substances into and out of the cells or help to fight disease |  | 27 |
| 1625821772 | amino acids | monomers of molecules that make proteins |  | 28 |
| 1625821773 | enzymes | Proteins that are biological catalysts that speed up reactions and drive all of life's functions |  | 29 |
| 1625821774 | activation energy | Energy needed to get a reaction started |  | 30 |
| 1625821775 | catalyst | Substance that speeds up the rate of a chemical reaction |  | 31 |
| 1625821776 | substrates | The reactants of enzyme-catalyzed reactions |  | 32 |
