Terms : Hide Images
| 7148789796 | Matter | Anything that has mass and takes up space. |  | 0 |
| 7148789797 | Model | An explanation or representation of something that cannot be seen. |  | 1 |
| 7148789798 | Element | A collection of atoms that all have the same number of protons. |  | 2 |
| 7148789799 | Molecules | Chemicals that result from atoms linking together. |  | 3 |
| 7148789800 | Physical Change | A change that affects the appearance but not the chemical makeup of a substance. |  | 4 |
| 7148789801 | Chemical Change | A change that alters the makeup of the elements or molecules of a substance. |  | 5 |
| 7148789802 | Phase | One of three forms - solid, liquid, or gas - which every substance is capable of attaining. |  | 6 |
| 7148789803 | Diffusion | The random motion of molecules from an area of high concentration to an area of low concentration. |  | 7 |
| 7148789804 | Concentration | A measurement of how much solute exists in a certain volume of solvent. |  | 8 |
| 7148789805 | Semipermeable Membrane | A membrane that allows some molecules to pass through but does not allow other molecules to pass through. |  | 9 |
| 7148789806 | Osmosis | The tendency of a solvent to travel across a semipermeable membrane into areas of higher solute concentration. |  | 10 |
| 7148789807 | catalyst | A substance that alters the speed of a chemical reaction but is not used up in the process |  | 11 |
| 7148789808 | Organic Molecule | A molecule that contains only carbon and any of the following: hydrogen, oxygen, nitrogen, sulfur, and/or phosphorus. |  | 12 |
| 7148789809 | Biosynthesis | The process by which living organisms produce larger molecules from smaller ones. |  | 13 |
| 7148789810 | Isomers | Two different molecules that have the same chemical formula. |  | 14 |
| 7148789811 | Monosaccharides | Simple carbohydrates that contain 3 to 10 carbon atoms. |  | 15 |
| 7148789812 | Disaccharides | Carbohydrates that are made up of two monosaccharides. |  | 16 |
| 7148789813 | Polysaccharides | Carbohydrates that are made up of more than two monosaccharides. |  | 17 |
| 7148789814 | Dehydration Reaction | A chemical reaction in which molecules combine by removing water. |  | 18 |
| 7148789815 | Hydrolysis | Breaking down complex molecules by the chemical addition of water. |  | 19 |
| 7148789816 | Hydrophobic | Lacking any affinity to water. |  | 20 |
| 7148789817 | Saturated Fat | A lipid made from fatty acids that have no double bonds between carbon atoms. |  | 21 |
| 7148789818 | Unsaturated Fat | A lipid made from fatty acids that have at least one double bond between carbon atoms. |  | 22 |
| 7148789819 | Peptide Bond | A bond that links amino acids together in a protein. |  | 23 |
| 7148789820 | Hydrogen Bond | A strong attraction between hydrogen atoms and certain other atoms, usually oxygen or nitrogen, in specific molecules. |  | 24 |
