Welcome to your Kinetic Molecular Model of Matter and Temperature(Senior Class Physics Study by Topics) NAME EMAIL PHONE NUMBER 1. Which postulate of KMT explains why the scent of fresh coffee in the morning fills up every room in the house? 4‐ The mean kinetic energy of the particles is directly proportional to their absolute temperature. 1-All particles are infinitely small and the size of a particle is negligible compared to the container that it holds. 2‐ The particles of gas are in constant motion and move in straight lines. 3‐ The particles of gas do not exert any force of attraction or repulsion on each other. There is no energy loss during a collision. 2. Which postulate of the KMT explains why gases do not have a fixed volume. The particles of gas are in constant motion and move in straight lines. The particles of gas do not exert any force of attraction or repulsion on each other. There is no energy loss during a collision. The mean kinetic energy of the particles is directly proportional to their absolute temperature. All particles are infinitely small and the size of a particle is negligible compared to the container that it holds. 3. A sample of nitrogen occupies 5.50 liters under a pressure of 900 torr at 25oC. At what temperature will it occupy 10.0 liters at the same pressure? 32°C -109°C 269°C 154°C 4. A real gas behaves more like an ideal gas when the gas molecules are Close and have strong attractive forces between them Close and have weak attractive forces between them Far apart and have weak attractive forces between them Far apart and have strong attractive forces between them 5. Each of the containers is shown at the same temperature. In which container is the average speed of the particles the fastest? Chlorine Hydrogen Nitrogen Oxygen 6. The stopper is removed from the container of chlorine, at which temperature will the gas diffuse the fastest. 310 K 290 K 245 K 273 K 7. The kinetic molecular theory assumes that the particles of an ideal gas Have strong attractive forces between them Are in random, constant, straight-line motion Are arranged in a regular geometric pattern Have collisions that result in the system losing energy 8. Which statement is false Pressure must be exerted on a sample of a gas in order to confine it. The molecular weight of a gaseous compound is a non-variable quantity Gases can be expanded without limit. The density of a gas is constant as long as its temperature remains constant. (b) 9. Which is NOT an assumption of matter made by the kinetic molecular theory of gases? When particles collide, their total energy is decreased. Gas particles are small and take up little volume relative to the volume of the space around them. The kinetic energy of particles is determined by their mass and their velocity. Gas particles are widely dispersed and therefore are not affected significantly by attractive or repulsive forces. 10. Gases are similar to liquids in that; They are both considered fluids They have a definite volume They take the shape of their container They cannot be compressed 11. Kinetic-molecular theory is most useful and accurate when gases are at _____ or at _____ high temperature; high pressure low temperature; high pressure high temperature; low pressure low temperature; low pressure 12. Particules will experience large velocities at ... None of the above Low temperature High temperature Intermediate temperature 13. Gases found in the environment are most likely to exhibit properties similar to that of ideal gases under conditions of: Low temperatures and low pressures High temperatures and low pressures High temperatures and high pressures Low temperatures and high pressures 14. Which state of matter exhibits only vibrational movement? Liquid Solid Gas Plasma 15. What total gas volume (in liters) at 520oC and 880 torr would result from the decomposition of 33 g of potassium bicarbonate according to the equation:2KHCO3(s) K2CO3(s) + CO2(g) + H2O(g) 56 L 37 L 10 L 19 L 16. How do gas molecules move?: In a circular motion Constantly and randomly In curved-line paths In an orderly fashion 17. Under which conditions of temperature and pressure does oxygen gas behave most like an ideal gas High temperature and high pressure Low temperature and high pressure Low temperature and low pressure High temperature and low pressure 18. As the sealed, inflexible container is heated, the gas molecules inside Become less dense Condense to a liquide Increase in volume Begin to move faster 19. The ideal gas law predicts that the molar volume (volume of one mole) of gas equals: (MW)P/RT gRT/PV RT/P 1/2ms-² 20. In a real gas particles have complete inelastic collisions meaning no energy is lost. True False 21. According to the kinetic molecular theory, which statement describes the particles in a sample of an ideal gas? The separation between the gas particles is smaller than the size of the gas particles themselves. The motion of the gas particles is random and straight-line. The collisions between the gas particles cannot result in a transfer of energy between the particles. The force of attraction between the gas particles is strong. 22. Which is the term used to describe the energy required to increase the surface area of a liquid? Surfactant Surface tension Deposition Viscosity 23. The rate of HCl vs NH4 is Slower Faster Equal The same 24. Under which conditions of temperature and pressure does a sample of neon behave most like an ideal gas? 400 K and 25 atm 100 K and 0.25 atm 100 K and 25 atm 400 K and 0.25 atm 25. Under which conditions of temperature and pressure would helium behave most like an ideal gas? 50K and 20kPa 750K and 600kPa 50K and 600kPa 750K and 20kPa 1 out of 25 Time is Up! Time's up
