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atomic theory pt. #2
compounds
| Question | Answer |
|---|---|
| conservation of mass | matter is never created or destroyed it recognizes itself. |
| compound | chemical combination of two or more atoms from different elements. |
| covalent | compound between 2 non-metals |
| ionic | compound between a metal and a non-metal |
| molecules | two or more atoms combined |
| lewis Dot Structure | shows the way compounds form using their valence electrons |
| substance | matter with a fixed composition whose identity can be changed by chemical processes |
| precipitate | solid that comes back out of its solution because of a chemical change occurring |
| homogeneous mixture | a mixture that is completely combined and that you can not see a difference in. |
| heterogeneous mixture | a mixture that is incompletely combined and that you can see differences in. |
| solute | a substance that dissolve and seem to disappear into another substance. |
| solovent | the substance that dissolves the solute |
| solution | the homogeneous mixture whose element and/or compounds are evenly mixed or bonded together |
| physical change | form or appearance of matter changes but not its composition |
| vaporization | liquid changes to a solid or a liquid changes to a gas |
| condensation | a gas changes into a liquid |
| sublimation | solid changes directly into a gas |
| deposition | a gas changing directly into a solid |
| chemical change | substances are changed into two different substances |