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level: Molecular kinetic theory model

Questions and Answers List

level questions: Molecular kinetic theory model

QuestionAnswer
Give internal energy, kineteic energy and potential energy as a formulaU = sum of Ep + Sum of Ek Internal energy = sum of potential energy + sum of the kinetic energy
Give heating applied, work done and internal energy as a formulaChange in U = Change in W + Change in Q Change in internal energy = work done to it + heating applied to it
Whats the kinetic energy of the moleules directly proportional to?Absolute temperature
Whats Brownian motionReseon as to why there is a constant random movement of particles in a liquid and gas
What was Brownian motion evidence ofEvidence of excistence of atoms
What equation can the 3 gas laws be condensded to?(PV)/T = constant (Pressure x volume) / temperature = constant
For this question state what happens and why If you decrease the volume, and keep the temperature constant, what happens?Pressure increases Cause theres less space for the mlecules so they collide with the walls of their container more frequently
For this question state what happens and why If you increase T, but keep V constantP increases Because the molecules move faster, so they collide wth eachother more often, and with more energy so the collsions have more force
For this question state what happens and why Increase Temperature, and keep the Pressure constantV increases Becasue the molecule move faster and so collide more. They also move faster and have more energy Since pressures constant the volume needs to increase
What is the molecular theory model equation for thermal physicspV = idgaf = 1/3 X number of moles X mass X root mean speed squared
What assumotions were made about the kinetic theory model?Randomness Attraciviness Volume Elastic Duration
For the kinetic thory model, explain what is meant by random motionMolecules have a range of speeds (1) They have no preferred direction of movement (1)
What did Brownian motion find out about particlesThat small, fast moving particles move larger partiles