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all chm vocab
| question | Answer |
|---|---|
| catalyst | a substance that increases the rate of a chemical reaction by lowering activation energies but is not itself consumed in the reaction |
| chemical change | a process involving one or more substances changing into a new substance also called a chemical reaction |
| phase changes | a change of state solid liquid or gas |
| diatomic | two atoms N2 Cl2 F2 H2 I2 Br2 O2 |
| Double replacement | A chemicall reaction that involves the exchange of positive ions between two compunds and products either |
| precipate | a solid produced during a chemical reaction in a solutionb |
| chemucal bonds | the force that holds two atoms together may form by the attraction of a positive ion for a negative ion or by the attraction of a positive nucleus for negative electrons |
| thermochemistry | study of changes of energy changes that happen during chemical and phases changes |
| Boyle's law | The volume of a given amount of gas held at a constant temperature |
| Charles law | Volume of a given mass of gas is directly proportional to its kelvin tempature at constant pressure |
| combined gas law | relationship among pressure volume and tempature of a fixed amount of gas |
| molar volume | for a gas the volume that one mole occupitios at 0.0 celsius at 1.00atm pressure |
| dipole dipole forces | The attracttion between oppositely charged regions of polar molecules |
| sublimation | the energy requiring processs by a solid changes directly into a gsas without first becoming a liwquid. |
| evaporation | a phase change liquid to gas |
| condensation | phase change gas to liquid |
| melting | phase change solid to liquid |
| freezing | phase change liquid to solid |
| deposition | phase change gas to solid |
| enthalpy | change in energy due to a chemic reaction or or phase change |
| symbol J | Heat variable is q |
| symbol g | grams measures mass variable m |
| symbol kpa | pressure P |
| symbol atm | pressure p |
| symbol L | Liters V |