Gases - Kinetic-Molecular Theory, Behavior and Units

Question 1

kinetic theory of matter

Answer 1

• describes the properties of matter in terms of particles in motion
• KE = 1/2 * mv^2
• matter is made up of small particles (either atoms or molecules)
• particles are constantly moving and possess kinetic energy
• possess potential energy due to attractive or repulsion forces between particles
• the average kinetic energy of the particles is directly proportional to the Kelvin temperature
• the particles collide with each other and transfer energy without incurring an energy loss - elastic collisions

Question 2

density

Answer 2

• mass/volume
• constant, characteristic property
• varies slightly with temperature
• can be used as a conversion factor
• helpful in laboratory

Question 3

graham’s law of diffusion

Answer 3

• rate of diffusion is inversely proportional to the square root of their densities and as a result to their molar mass
• 1/square root of molar mass