Introduction to Gases

The theory that states that particles of matter are in constant motion is the __________________.

• Kelvin Theory

• Kinetic Molecular Theory

• Relativity Theory

• VSEPR Theory

Tags

NGSS.HS-PS3-2

An ideal gas is an imaginary gas ______________________.

• Made of motionless gas.

• Made of electromagnetic waves

• Whose particles have zero mass.

• That follows all of the assumptions of the kinetic theory.

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NGSS.HS-PS3-2

Which of the following is not an assumption of the kinetic molecular theory?

• Gas particles attract or repel one another.

• Gases are made of very small particles that are far apart compared to their size.

• Gas particles collide with one another in elastic collisions.

• The average kinetic energy of gas particles depends on the temperature of the gas.

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NGSS.HS-PS3-2

The smell of a freshly baked break spreading out

throughout the house is an example of ___________.

• expansion

• fluidity

• diffusion

• effusion

Gases take the shape of their container because of their_____.

• Compressibility

• Fluidity

• Density

• Expandability

Air slowly escaping from a tiny hole in a balloon is an example of _______.

• Expansion

• Diffusion

• Effusion

• Fluidity

Which of the following gases is likely to effuse more quickly?

• He

• Kr

• Ar

• O₂

Constant collisions of the gas particles within a container create ___________ within the container.

• Temperature

• Pressure

• Elasticity

• Diffusion

Tags

NGSS.HS-PS3-2

What is STP?

• Standard Temperature and Pressure

• Zero degrees Celsius and 1 atm

• A standard set of conditions used in scientific investigations

• All of the above

Which of the following are units used to measure pressure?

• Torr, Kelvin, Atm

• mmHg, newton, mole

• kg, mL, and kPa

• mmHg, atm, pascal