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Unit 1 topic 3 vocab
| Question | Answer |
|---|---|
| Adhesion | the tendency of dissimilar particles, molecules, or surfaces to stick or bind to one another. |
| Cohesion | the act of a group uniting as a whole |
| Polar molecule | a molecule with an uneven distribution of electrical charge, resulting in a partial positive end and a partial negative end. |
| Hydrogen bond | an intermolecular attraction where a hydrogen atom covalently bonded to an electronegative atom interacts with another electronegative atom bearing a lone pair of electrons. |
| Surface tension | the property of a liquid’s surface that makes it behave like a stretched elastic sheet, caused by cohesive forces between molecules. |
| Capillary action | the movement of a liquid through a narrow space or porous material, driven by adhesion, cohesion, and surface tension, often against gravity. |
| Specific heat capacity | he amount of heat energy required to raise the temperature of one unit mass of a substance by one degree Celsius or one kelvin |
| Expansion upon freezing | the increase in volume that occurs when a liquid, such as water, solidifies into a solid. |
| Universal solvent | water, dissolves more substances than any other liquid due to its polar molecular structure and ability to attract and separate ions and polar molecules. |