Chemistry Chapter 13 study guide questions – Flashcards
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what is pressure?
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a property of all gas. It exerts pressure on (pushes against) the sides
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what are the instruments that are used to measure pressure?
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barometer,
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what are the units used to describe pressure?
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atm, mmHg, torr, psi, pascals
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what is standard atmosphere?
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a unit of pressure abbreviated a: atm or 760 mm Hg
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what is a manometer?
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device used to measure the pressure of a gas in a container.
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what is 1 atmosphere?
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a unit of pressure = to 760 mmHg
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what is volume?
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In Boyle's law, volume decreases as pressure increases
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what is kept constant in Boyle's law?
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temperature and amount of gas (moles)
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according to boyle's law what happens when pressure is multiplied by volume?
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pressure times volume equals a constant
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according to boyle's law when the pressure increases, what happens to the volume?
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boyle's law states that pressure and volume are inversely related (pressure goes up/volume goes down
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according to boyle's law when the pressure decreases what happens to the volume?
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pressure goes up/volume goes down
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according to boyle's law, what is the relationship between pressure and volume?
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inverse
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what does an increase in temperature do to gas molecules?
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speeds them up, decreases the volume
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what does a decrease in temperature do to gas molecules?
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results in a decrease in volume
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what is held constant in charle's law?
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pressure
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what happens to the volume of the gas when the temperature increases?
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volume increases
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what happens to the volume of the gas when the temperature decreases?
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volume decreases
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What is the relationship of volume to temperature in charle's law?
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linear
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what is total pressure?
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sum of the partial pressures of the gas
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what is a scientific law?
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generalization about behavior that had been observed in many expirements
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what does a scientific law tell us?
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the behavior of similar systems
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what is a scientific model?
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are speculations about how individual atoms cause the behavior of a larger system
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what information does a scientific model give us?
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it explains behavior and predicts the result of future experiments
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what is kinetic energy?
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the energy associated with the motion of a particle
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what is the kinetic energy formula?
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KE=1/2*m*v^2
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what is the purpose of the kinetic molecular theory?
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helps explain the gas laws
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what are the conditions of the kinetic molecular theory?
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with increase of temperature, is an increase in pressure and increase in volume
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what is an ideal gas?
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gas that exactly obeys the equation pv=nRT
