A DECREASE in the density of a sample of a gas inside a balloon could be caused by
Responses
A putting the balloon in the refrigerator.putting the balloon in the refrigerator.
B taking the balloon outside on a hot day.taking the balloon outside on a hot day.
C shaping the balloon into the shape of a dog.shaping the balloon into the shape of a dog.
D taking the balloon down to the bottom of the ocean.
D taking the balloon down to the bottom of the ocean.
To determine which option could cause a decrease in the density of the gas inside a balloon, we need to consider the relationship between temperature, pressure, and density of an ideal gas.
According to the ideal gas law, the density of a gas is directly proportional to the pressure and inversely proportional to the temperature. So, to decrease the density of a gas, we can either decrease the pressure or increase the temperature.
Let's examine each option provided:
A. Putting the balloon in the refrigerator: Putting the balloon in the refrigerator would decrease the temperature, which would decrease the density of the gas according to the ideal gas law. Therefore, this option could cause a decrease in the density of the gas inside the balloon.
B. Taking the balloon outside on a hot day: This option would increase the temperature, which would result in a decrease in gas density. Therefore, this option could also cause a decrease in the density of the gas inside the balloon.
C. Shaping the balloon into the shape of a dog: The shape of the balloon does not directly affect the density of the gas inside. Therefore, this option is unlikely to cause a decrease in density.
D. Taking the balloon down to the bottom of the ocean: The pressure increases significantly at the bottom of the ocean due to the weight of the water above. Since density is directly proportional to pressure, increasing the pressure would increase the density of the gas. Therefore, this option is unlikely to cause a decrease in density.
Based on the explanations provided, the options that could cause a decrease in the density of the gas inside the balloon are: A. Putting the balloon in the refrigerator, and B. Taking the balloon outside on a hot day.
The correct answer is D. Taking the balloon down to the bottom of the ocean.
When a gas is subjected to higher pressures, such as in the depths of the ocean, its molecules are compressed closer together, leading to an increase in density. However, decreasing the pressure, such as by taking the balloon down to the bottom of the ocean, causes the gas molecules to spread out and the density to decrease.