DCE Chem Unit 7 Word Scramble
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Term | Definition |
fluid | a material in which the particles have enough energy to slide past one another (flow). Gases and liquids are fluids. |
pressure | force per unit area caused by collisions between gas particles and the container (can be measured in atm, mmHg, kPa, etc.) |
compressibility | a measure of how much the volume of matter decreases when pressure is applied |
STP | standard temperature and pressure: zero degrees Celsius (273 K) and 101.3 kPa (1 atm or 760 mm Hg) |
Kinetic Molecular Theory | a theory explaining the states of matter based on the concept that matter consists of tiny particles that are in constant motion |
Avagadro's Law | equal volumes of gases at the same temperature and pressure contain equal numbers of gas particles (at STP all gases have a volume of 22.4 L) |
Dalton's Law of Partial Pressures | the total pressure of a mixture of gases is equal to the sum of all the partial pressures for each gas |
partial pressure | in a mixture of gases, the contribution that each gas makes towards the overall pressure |
Ideal Gas Law | PV = nRT |
Kelvin | A temperature scale used for measuring temperature of gases (Kelvin = Celsius plus 273) |
R | ideal gas constant (8.31 or 0.0821 or 62.4 depending upon units used) |
diffusion | the tendency for molecules to move from areas of higher concentration to areas of lower concentration until the concentration is uniform throughout |
Boyle's Law | P1V1 = P2V2 |
Charles's Law | V1T2 = V2T1 |
Guy-Lussac's Law | P1T2 = P2T1 |
Combined Gas Law | P1V1T2 = P2V2T1 |
effusion | the process by which gas escapes through a tiny hole |
Avagadro's Principle | V1n2 = V2n1 |
Archimedes Principle | actual mass = apparent mass + mass of displaced fluid |
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