Question: Seal the opening of the beaker instantly with a completely airtight lid. How will the pressure inside the beaker change over the next short period of time?
A. The internal pressure will decrease significantly.
B. The internal pressure will increase significantly.
C. The internal pressure will remain essentially unchanged.
D. The internal pressure will eventually match the external atmospheric pressure.
Clues:
1. The image shows a sequence of actions involving a beaker, a liquid, green beans, and a white powder.
2. A white powder is added to a beaker containing liquid and green beans.
3. After the powder is added, numerous gas bubbles form in the liquid.
4. The green beans, which were previously at the bottom, are seen floating and suspended in the liquid due to the bubbles.
5. The formation of bubbles indicates a gas is being produced by a chemical reaction.
6. The image displays a chemical experiment in a glass beaker over three stages.
7. In the final stage, a white powder is being added to the beaker.
8. Following the addition of the powder, a large number of bubbles are visible throughout the liquid.
9. The green beans are shown suspended in the liquid and rising, which is caused by the bubbles attaching to them.
10. The presence of vigorous bubbling indicates that a gas is being produced as a product of a chemical reaction.
Answer: B
Category: Physics