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Apologia Module 5.1
Chemistry of Life Part 1
| Question | Answer |
|---|---|
| Matter | Anything that has mass and takes up space |
| Model | An explanation of representation of something that cannot be seen |
| Element | A collection of atoms that all have the same number of protons |
| Molecules | Chemicals that result from atoms linking together |
| Physical Change | A change that affects the appearance but not the chemical makeup of a substance |
| Chemical Change | A change that alters the makeup of the elements or molecules of a substance |
| Diffusion | The random motion of molecules from an area of high concentration to an area of low concentration |
| Concentration | A measurement of how much solute exists within a certain volume of solvent |
| Semi-permeable membrane | A membrane that allows some molecules to pass through but does not allow other molecules to pass through |
| Osmosis | The tendency of a solvent to travel across a semipermeable membrane into areas of higher solute concentration |
| Catalyst | A substance that alters the speed of a chemical reaction but is not used up in the process |
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