Air Composition Done By Reeha and Vrisha

What are the main components of air?

• neon

• hydrogen

• nitrogen, oxygen, argon, carbon dioxide

• helium

Which gas makes up the majority of Earth's atmosphere?

• Argon

• Carbon dioxide

• Nitrogen

• Oxygen

What is the approximate percentage of oxygen in the air?

• 21%

• 10%

• 15%

• 30%

How does air pressure change with altitude?

• Air pressure remains constant with altitude.

• Air pressure increases with altitude.

• Air pressure decreases with altitude.

• Air pressure fluctuates randomly with altitude.

Explain the concept of diffusion in gases.

• Diffusion in gases refers to the movement of gas molecules from an area of high concentration to an area of low concentration until equilibrium is reached.

• Diffusion in gases is the movement of liquid molecules from an area of low concentration to an area of high concentration.

• Diffusion in gases is the process of converting gas molecules into solid particles.

• Diffusion in gases only occurs in solids, not in gases themselves.

What is the relationship between temperature and volume in gases?

• Exponential relationship

• Direct relationship

• Inverse relationship

• No relationship

Why do gases expand to fill their containers?

• Gases expand to fill their containers due to the constant, random motion of their particles and the pressure they exert on the container walls.

• Gases expand to fill their containers due to the color of the container

• Gases expand to fill their containers because they are attracted to the container walls

• Gases expand to fill their containers because they are solid particles

What is the difference between compressibility of gases and liquids?

• Gases are highly compressible, while liquids are nearly incompressible.

• Both gases and liquids are equally compressible.

• Gases are incompressible, while liquids are compressible.

• Liquids are more compressible than gases.

How does the density of a gas change with temperature?

• Gas density decreases with increasing temperature.

• Gas density remains constant with changing temperature.

• Gas density increases with increasing temperature.

• Gas density is not affected by temperature.

Describe the behavior of gases under high pressure.

• Gases under high pressure become less dense

• Gases under high pressure solidify

• Gases under high pressure tend to occupy less volume and become more dense.

• Gases under high pressure expand and occupy more volume