Presence of Air in an Empty Bottle Experiment

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Questions and Answers

What does the activity with the bottle immersed in water demonstrate?

Air occupies space (correct)

Air is lighter than water

Bottles are waterproof

Water is denser than air

Which gas in the air supports burning?

Oxygen (correct)

Carbon dioxide

Noble gases

Nitrogen

What is the main constituent of air?

Nitrogen (correct)

Dust particles

Carbon dioxide

Water vapor

Why does water rush into the bottle when it is tilted?

Air rushes out, creating a vacuum Signup and view all the answers

What is the conclusion drawn from the activity where a candle is placed in a big bowl and lit?

Oxygen helps in burning. Signup and view all the answers

What does the presence of the ozone layer in the Earth's atmosphere help protect humans from?

Harmful ultraviolet rays of the sun Signup and view all the answers

What gas is produced when burning something, as mentioned in the text?

Carbon dioxide Signup and view all the answers

How can the presence of water vapor in the air be verified?

Observing condensation of water outside a glass of iced water Signup and view all the answers

What gas helps in burning, as concluded from the activity with the candle placed in a big bowl?

Oxygen Signup and view all the answers

Which gas is mentioned to be present in the Earth's atmosphere and helps protect humans from harmful ultraviolet rays of the sun?

Ozone Signup and view all the answers

How is the presence of water vapor in the air verified, as explained in the text?

By observing condensation of water outside a glass of iced water Signup and view all the answers

Apart from oxygen, which gas is mentioned to be produced when burning something?

Carbon dioxide Signup and view all the answers

What is the purpose of the activity described in the text?

To illustrate that oxygen supports burning Signup and view all the answers

What happens when the candle is covered with an inverted glass in the activity?

The candle extinguishes due to lack of oxygen Signup and view all the answers

What gas is released when plants and animals undergo respiration?

Carbon dioxide Signup and view all the answers

Which gas is not mentioned as a component of air in the text?

Methane Signup and view all the answers

Study Notes

Air Composition and Burning

The activity with the bottle immersed in water demonstrates that air contains a gas that supports burning – oxygen.
Oxygen is the main constituent of air.
When the bottle is tilted, water rushes into the bottle because the space inside is occupied by air, which is mostly oxygen.
The activity with the candle placed in a big bowl demonstrates that burning requires oxygen, and when the oxygen is consumed, the flame goes out.
The activity with the bottle immersed in water demonstrates that air is not just empty space, it contains gases.

Ozone Layer

The ozone layer in the Earth's atmosphere protects humans from harmful ultraviolet rays of the sun.

Respiration and Burning

Carbon dioxide is produced when burning something.
Carbon dioxide is also released when plants and animals undergo respiration.

Water Vapor in the Air

The presence of water vapor in the air can be verified by observing the formation of dew or mist.
The presence of water vapor in the air can be verified by observing the condensation of water vapor on a cold surface.

Other Gases

Nitrogen is another gas present in the Earth's atmosphere.
Helium is not mentioned as a component of air in the text.

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Description

This quiz activity explores the presence of air in a seemingly empty bottle by demonstrating the displacement of water. Participants will learn how air occupies space even if it cannot be seen, through a simple experiment with a bottle and water. Follow the steps provided to observe the effects of air pressure on the liquid inside the bottle.