Kinetic Particle Model Of Matter Flashcards
State kinetic particle model of matter
It states all matter is made up of tiny particles which are in continuous motion
Why do smoke particles move around in continuous random manner
Random motion is due to constant, uneven bombardment of smoke particles by invisible air particles
What happens to the motion of smoke particles as their size increases
The larger the smoke particles, the less agitated the motion
State what the Brownian Motion refers to
It refers to the continuous, random motion of particles suspended in liquid or gas as a result of bombardment by fast moving liquid or gas particles
What is the effect of temperature on motion of particles
As temperature increases, average kinetic energy of particles in a body increases and vice versa
What happens to motion of smoke particles as air temperature is increased
Temperature of air increases, average kinetic energy of air molecules increases, air molecules bombard smoke particles more frequently and forcefully, so smoke particles move at higher average speed and change direction more frequently
How is pressure produced on a container’s inner walls due to air
When gas particles collide with inner walls of a container, a force is exerted on container. By considering numerous collisions between gas particles and wall, average force is exerted by particles on wall and force per unit area gives rise to pressure exerted by particles on the wall
How does increase in temperature increase the pressure experienced by container due to air
`At constant volume, when temperature increases the average speed of particles increases, hence particles will collide with walls of container more frequently and more forcefully
How does increase in volume of container decrease pressure experienced by container due to air
At constant temperature, when volume increases, particles will collide with the walls of container less frequently
As a bubble floats from within the water to the surface, its volume increases. Explain the change in pressure experienced by inner walls of bubble
Pressure of gas within the bubble decreases as volume of bubble increases. The frequency of collisions between gas molecules and inner bubble wall decreases.
