Frozen Balloon

The video explores how the volume of a gas changes with temperature under constant pressure. Using a helium-filled balloon and liquid nitrogen, the experiment demonstrates that cooling the gas causes it to contract, while warming it causes expansion. This principle is analogous to bread baking, where gas bubbles expand with heat, making the bread rise. The video highlights the relationship between gas volume and temperature, emphasizing that volume increases with heat if pressure remains constant.

What is the main question posed about the balloon in the introduction?

• How to fill a balloon with air.

• The best way to deflate a balloon.

• Whether a balloon can change size without changing the gas amount.

• How to inflate a balloon with helium.

What is used to demonstrate the change in gas volume with temperature?

• A helium balloon and liquid nitrogen.

• A metal can and steam.

• A rubber band and hot water.

• A plastic bottle and ice.

What happens to the helium atoms as the temperature decreases?

• They change into a different element.

• They disappear completely.

• They lose energy and slow down.

• They gain energy and move faster.

Why does the balloon shrivel up when placed in liquid nitrogen?

• The helium gas inside contracts.

• The helium gas inside expands.

• The balloon absorbs the liquid nitrogen.

• The balloon material becomes brittle.

What happens to the volume of gas when it is heated under constant pressure?

• The gas changes state.

• The volume increases.

• The volume remains the same.

• The volume decreases.

How does the process of bread rising relate to the gas behavior in the balloon?

• Both involve the use of liquid nitrogen.

• Both involve the use of helium.

• Both involve a decrease in temperature.

• Both involve gas expansion due to temperature increase.

What happens to the gas pockets in bread once it is cooked?

• They become solid.

• They turn into liquid.

• They are replaced by air.

• They remain as gas.