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Chapter 1 Vocabulary
Definitions of Chapter 1 Terms
| Term | Definition |
|---|---|
| Homogeneous Mixture | A mixture that has the same composition throughout |
| Heterogeneous Mixture | A mixture that does not have uniform composition |
| Element | A substance that can not be broken down into simpler parts |
| Compound | A substance that can be broken down into simpler parts by a chemical change |
| Solution | Another name for a homogeneous mixture |
| Solute | The substance that is dissolved in a solution |
| Solvent | The substance that does the dissolving in a solution |
| Alloy | A type of solution where one metal is dissolved in another |
| Aqueous Solution | A type of solution where water is the solvent |
| Physical Change | A change that does not alter the identity or composition of matter |
| Chemical Change | A change that results in the formation of new matter with different properties |
| Physical Property | A description of the physical nature of matter; does not involve a change in the behavior of matter |
| Chemical Property | A description of a behavior; this property can only be observed when matter undergoes a chemical change |
| Matter | Anything that has mass and takes up space |
| Phase change | A change where matter moves from one state (solid, liquid or gas) to a different state; controlled by temperature |
| Element | The most specific and ordered class of matter |
| Heterogeneous Mixture | The least ordered class of matter |
| Volume | The characteristic of "taking up space" |
| Mass | A measure of the amount of matter in an object; scientists prefer this measurement because it is constant |
| Weight | A measure of the gravitational pull on an object; changes with position on the earth |
| Endothermic | A type of energy change where energy must be put into (or absorbed by) the matter in a reaction |
| Exothermic | A type of energy change where energy is released by the matter in a reaction |
| Hydrolysis of water | An example of an endothermic reaction |
| Whoosh Bottle | An example of an exothermic reaction |
| Law of Conservation of Matter | Matter can never be created nor destroyed |
| Chemical Formula | The combination of chemical symbols that describes the composition of a chemical compound |
| Chemical Symbol | 1 or 2 letter abbreviation that represents an element |
| Quantitative Observation | an observation that makes use of a measurement |
| Qualitative Observation | an observation that uses word descriptions |
| Density | A ratio between the mass and the volume of a sample of matter |
| Volatile | The characteristic of a liquid to evaporate easily |
Created by:
chembaker
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