1) When there is a decrease in pressure the volume of the balloon to increase due to the fact that there is less air pressure. The molecules inside of the balloon spread out to match the pressure outside the balloon cause the balloons volume (size) to increase.
2) If and when you add more gas to a bottle the pressure will increase inside with less room the molecules will collide with each other more creating higher pressure.
2) If and when you add more gas to a bottle the pressure will increase inside with less room the molecules will collide with each other more creating higher pressure.
3) As the volume of a cylinder increases the pressure will increase in order to keep the pressure inside the cylinder equal to the outside pressure the same before the volume increased.
4) Increasing the pressure in a tire due to adding more gas, will cause the volume to increase because the tire expands in order to match the pressure outside the tire.
5) As the temperature of a closed container of water is increased the amount of water vapor above the water causes an increase in vapor pressure. The higher the temperature, the more water that will be vaporized which means there will be more gas molecule collisions meaing air pressure increases inside the container.
6) As the air pressure above a liquid is increased by adding more air, the boiling point of the liquid will increase because as the pressure increases the boiling point increases relatively to the pressure. This is because with a higher pressure it is harder for the molecules to separate with less room and become a gas.
7) If a balloon filled with air is taken under water its volume will decrease because there is higher pressure below the water the balloon will get smaller to match the outside pressure. Providing less room inside the balloon allows more collisions increasing the pressure inside the balloon to match the outside.
8) The temperature of a beaker of boiling water will remain the same as more heat is added because as it boils it remains the same temperature breaking the bonds of the molecules to create gas.
9) Hot air rises because it is less dense with the cool air around it. More energy = less dense and less dense = more it will rise.
10) When heated, the volume occupied by air in a balloon will increase because the more and more molecules there are inside of that balloon collides creating higher pressure causing the balloon expand more / have a higher volume.
Enrichment:
In the picture of the tanker car, it was sunk in due to the air pressure difference. As you flush the tank out with hot water, it caused more water vapor due to the temperature of the water. As the water vapor temperature decreased, the water vapor went from a gas to a liquid. When water vapor pressure became nonexistent and all was left was water making pressure considerably different causing a vacuum effect. The air pressure outside of the tank was able to crush it due to a higher air pressure outside the tank.
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