1) Which of the following assumptions explains the great compressibility of gases? a) There is no force of attraction (aww) b) Particles are always in random motion c) Different particles have different speeds d) The actual volume of the gas molecules is negligible 2) A hot air balloon is released into the sky. As it rises higher into the atmosphere, it gradually expands. Which best explains this observation? a) b) c) d) 3) The graph shows the relationship between pressure and volume of a gas at constant temp. What conclusion can be drawn from the graph? a) As pressure increases, volume also increases b) As pressure increases, volume decreases c) Pressure and volume remain constant d) Pressure and volume varies directly 4) By applying Boyle's law, what will happen to the final volume of the gas given the initial and final conditions of the variables? a) b) c) d) 5) A 5.00 L of oxygen gas exerts a pressure of 1.00 atm. How much pressure is needed for this gas to be compressed in a 2.00 L cylinder at a constant temperature? a) 1.5 atm b) 2.0 atm c) 2.5 atm d) 3.0 atm 6) In an experiment, a student collects data on the volume of a gas at different temperatures while keeping the pressure constant. Which graph best represents the relationship between volume and temp? a) A straight line sloping upward b) A straight line sloping downward c) A horizontal line with no change in volume d) A curved line that flattens at higher temperatures 7) A balloon with a volume of 300 ml at 40C is submerged in hot water to obtain a temperature of 60C. What will happen to the volume of the balloon at a constant pressure? a) The volume of the balloon will become higher than 300 ml b) The volume of the balloon will become lower than 300 ml c) The volume of the balloon stays the same d) Both A and B 8) Which real-life scenario best illustrates Charles's Law a) A scuba diver's ears popping due to pressure changes underwater b) A plastic bottle shrinking when taken from high altitude to low altitude c) A compressed gas cylinder exloding when exposed to high temperatures d) A car tire appearing deflated on a cold morning but normal during the day 9) A hiker on his way down from a mountain trekking observed that a sealed plastic bottle slightly shrinks when taken from a high-altitude location to a lower altitude? a) b) c) d)

Science

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