Kinetic Molecular Theory
Behavior of gas
Intermolecular forces
Liquids
Phase Changes
100
  • What does the kinetic-molecular theory model?

Properties of gases.

100
  • What does the constant movement of gas particles allow them to do?

Allows them to expand and fill its container.

100

What are the three intermolecular forces?

dispersion force, dipole-dipole forces, hydrogen force

100

How do gases and liquids have the same average kinetic energy but one is denser than the other?

the intermolecular forces that hold the particles together

100

What happens when energy is absorbed by ice?

It disrupts the hydrogen bonds holding the water molecules together

200
  • How is energy being transferred?

when two or more particles collide.

200
  • What is the relationship between effusion rate and molar mass?

Effusion of a gaseous substance is inversely proportional to the square root of its molar mass. It is directly related to the speed it moves.

200

What causes a dispersion force?

temporary shifts in density in the electron clouds

200

Why are liquids less fluid with gases?  

because of the intermolecular attraction that interferes with the liquid

200

What happens when a water vapor molecule loses energy? 

its velocity decreases and is more than likely to make a hydrogen bond with another water molecule

300
  • How is the kinetic energy determined?

it is determined by mass and velocity (KE = ½ mv2­)

300
  • What process is it when particles exit the container there in?

Effusion

300

Do larger halogen gases have a stronger or weaker dispersion force?

stronger because of the amount of electrons

300

The increase in temperature does what to the viscosity?

the viscosity increases

300

What happens when the velocity of a water molecule decreases?

it would freeze and turn into a ice cube

400
  • What impact does the size of gas particles have?

there is no significant attraction or repulsive force

400
  • What causes gases to disperse over time?

the space they both occupy at the same time

400

What is the main component of a hydrogen bond?

hydrogen molecules

400

Why does water have a high surface tension?

Because the molecules can form multiple hydrogen bonds

400

What causes snow from a state of water vapor to a solid?

deposition

500
  • All particles have the same _ but never the same _?

Mass, velocity

500
  • Between lighter or heavier particles, which diffuses more rapidly?

Lighter particles

500

Which intermolecular force occurs when hydrogen chloride gas aligns with each other?

dipole-dipole

500

Why does the water make a curve in the glass tubes?

Because of adhesion it attracts the different molecules together which makes it look like it is curved

500

What are the six-phase changed that occurs in a triple point?

freezing, melting, evaporation, condensation, sublimation and deposition

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