Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Matter for AP Chem
Matter definitions for Unit 1 in AP Chem
| Question | Answer |
|---|---|
| Solid | -Definite shape and volume -Not easily compressed because particles are close together -Expand very slightly when heated |
| Liquid | -Definite volume, but indefinite shape -Not easily compressed because particles are slightly close together -Expand slightly when heated |
| Gas | -Indefinite shape and volume -Easily compressed because particles are far apart -Expand greatly when heated |
| Mixture | Matter that has varying composition |
| Substance | Matter that has a uniform and definite composition |
| Homogenous | A single phase in which components are distributed evenly throughout |
| Heterogenous | A mixture with multiple phases or layers in which components are not evenly distributed |
| Elements | The simplest form of matter with unique properties, and they cannot be broken down any further |
| Compounds | Two or more elements that are combined in a fixed whole number ratio. They can be separated into their constitutive elements by a chemical change |
| Decanting | Pouring off the top layer from the bottom layer by taking advantage of difference in densities |
| Filtering | To separate a solid from a liquid by using a funnel and filter paper. The solid will remain, and the liquid will pour through |
| Distillation | When multiple liquids are mixed homogenously, you can boil each off because of difference in evaporation points |
| Chromatography | Small samples of a mixture are placed on filter paper, and then placed in a wet container. As the sample rises to the top, it will separate each component out by differences in solubility. |
| Why will distillation not work with two liquids? | It does not work with two liquids because both will pour through without separating |
| Chemical Change | It must change into a new substance entirely. Examples: burning, reacting |
| Physical Change | The chemical composition will not change Examples: Phase changes, breaking, grinding |
| Chemical Properties | The ability of a chemical to react or undergo change |
| Physical Properties | Measurable and observable properties of a substance that do not require changing the composition |
| Law of Conservation of Mass | During any chemical reaction, matter cannot be destroyed or spontaneously created. If a gas is produced, the mass of the gas must also be taken into account. |
| Extensive Properties | Dependent on the amount of matter. Ex: mass, volume, length |
| Intensive Properties | Dependent on the type of matter Ex: color, density, conductivity |
| Qualitative | Appearance or behaviors that are not measured; observations Ex: color, texture, luster |
| Quantative | A mathematical description Ex: mass, volume, temperature, desnity |
Created by:
Rehnuma32219