Solids, liquids, and gases part 2
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Created by:
Tigerdoglover on October 11, 2011
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34 terms
Terms | Definitions |
|---|---|
 Graphs | Diagrams that tell how two variables, or factors, are related |
| Horizontal | X-axis of a graph |
| Vertical | y-axis of a graph |
| Grid | A graph consists of a ______ set up by two lines |
| Equal units | Each line, or axis is divided into ____________ |
| Relationship | When you graph recorded data, you look for a __________ |
| Kelvins | Scientists often work with gas temperatures in units called _______ |
| 273 | To convert celsius degrees to kelvins, you add ___ |
| Kelvin | The ______ temperatures will be used to graph the data |
| Directly proportional | When a graph of two variables is a straight line passing through the (0,0) point, the relationship is linear and the variables are said to be_______________ |
| The volume of a gas is directly proportional to it's Kelvin temperature under constant pressure | What does the graph of charles's law show? |
| Constant | Pressure and volume are related when temperature is kept ________ |
| Inversely | When a graph of two measurements forms a curve which slopes downward from left to right, and the curve is steep close to the horizontal axis, the relationship is nonlinear and the measurements are said to vary ________ with each other |
| The pressure of a gas varies inversely with it's volume at constant temperature | What does the graph for boyle's law show? |
| Thermal energy | The energy that particles of a substance have |
| Heat | Thermal energy is transferred from one substance to another as ______ |
| From a warmer substance to a cooler substance | Thermal energy always flows ___________ |
| Increases or decreases by a sufficient amount | A substance changes state when its thermal energy __________________ |
| Melting | The change in state from a solid to a liquid |
| Freezing | The change of state from a liquid to a solid |
| Vaporization | The change from liquid water into water vapor |
| A liquid gains enough energy to become a gas | Vaporization occurs when ______________ |
| Boiling | Takes place inside a liquid as well as at the surface |
| Boiling point | Temoerature at which a liquid boils |
| How strongly the particles of a substance are attracted to each other | The boiling point of a liquid depends on _______________ |
| Air pressure | As you go up in elevation, __________ decreases |
| Condensation | The opposite of vaporization |
| Gas particles lose enough thermal energy to become a liquid | Condensation occurs when _____________ |
| Sublimation | Occurs when the surface particles of a solid gain enough energy to become a gas |
| Data bank | Chemists have built up a _________ of information about the properties of a substance |
| Solid | Below 0'C, water exists in its _____ state |
| Liquid | Water must be a _______ before it's temperature can rise above 0'C |
| Gas | When more energy is added to liquid water at 100'C, molecules become a ___ |
| 100'C | Water must be it's gas stat before it's temerature can rise above _______ |
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