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Honors Chem Unit 2
| Question | Answer |
|---|---|
| Depends only on the type of matter, not the amount. | Intensive Property |
| Matter with a uniform, unchanging composition. | Pure Substance(Substance) |
| Dependent on the about of substance present. | Extensive Property |
| A mixture that has a constant composition throughout(always has a single phase). | Homogeneous Mixture |
| A mixture that does not blend smoothly throughout and in which the individual substances remain distinct. | Heterogeneous Mixture |
| Can be separated by physical means and is a blend of two or more pure substances. | Mixtures |
| Chemical combinations of two or more elements. | Compounds |
| Cannot be broken down into simpler substances. | Elements |
| If elements form more than one compound, those compounds will have compositions that are whole number multiples of each other. | Law of Multiple Proportions |
| A compound is always composed of the same elements in the same proportions. | Law of Definite Proportions |
| A transition of Matter form one state to another. | Phase Change |
| A change in a substances's composition. | Chemical Change |
| Alters the physical properties of a substance without changing its composition. | Physical Change |
| Has a definite shape and volume. | Solid |
| Flows, has constant volume, takes the shape of its container. | Liquid |
| Takes the shape of its container and fills its entire container. | Gas |
| Is an ionized gas consisting of free-moving electrons and positive ions, typically formed at extremely high temperatures or electrical charges (for example, lightning or the sun). | Plasma |
| Can be observed or measured without changing the samples's composition. | Physical Properties |
| Is a characteristic of a substance that describes its ability to undergo a specific chemical change or reaction, forming a new substance (for example, flammability, toxicity, or reactivity with acid). | Chemical Properties |
| Reactants from products. | Chemical Reaction |
| Mass is neither created nor destroyed during a chemical reaction; it is conserved. | Law of Conservation of Mass |
| Organizes the elements into a grid of horizontal rows and vertical columns. | Periodic Table |
| Periods | Horizontal Rows |
| Groups/Families | Vertical Columns |
| The chemical change of water into its component elements. | Electrolysis |
| A technique that uses a porous barrier to separate a solid from a liquid. | Filtration |
| A physical separation technique that is based on differences in the boiling points of the substances involved. | Distillation |
| A technique that separates the components of a mixture dissolved in either a gas or a liquid based on the ability of each component to travel or to be drawn across the surface of a fixed substrate. | Chromatography |
| The process during which a solid changes to a vapor without melting. | Sublimation |
| A technique that results in the formation of pure solid particles of a substance from a solution containing the dissolved substance. | Crystallization |
| mass of element / mass of compound x 100 | Percent by Mass |
| Substance in the gas phase at a temperature where that same substance can also exist as a liquid or solid (for example, steam from boiling water). | Vapor |
| Another word for Homogeneous Mixture. | Solution |
Created by:
eybee280
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