6: Diffusion in terms of the particle model
Science programmes of study: key stage 3 National curriculum in England (2013, p.8)
Diffusion: Diffusion is the movement of particles to maintain concentration.
Particles
Matter
(liquid/gas)
Container
Concentration
gradient
Movement
Rate
Osmosis
Diffusion
Temperature
Kinetic
Speed
6: Diffusion in terms of the particle model
Science programmes of study: key stage 3 National curriculum in England (2013, p.8)
Diffusion: Diffusion is the movement of particles to maintain concentration.
Particles
Matter
(liquid/gas)
Container
Concentration
gradient
Movement
Rate
Osmosis
Diffusion
Temperature
Kinetic
Speed
6: Diffusion in terms of the particle model
Science programmes of study: key stage 3 National curriculum in England (2013, p.8)
Diffusion: Diffusion is the movement of particles to maintain concentration.
Particles
Matter
(liquid/gas)
Container
Concentration
gradient
Movement
Rate
Osmosis
Diffusion
Temperature
Kinetic
Speed
6: Diffusion in terms of the particle model
Science programmes of study: key stage 3 National curriculum in England (2013, p.8)
Diffusion: Diffusion is the movement of particles to maintain concentration.
Particles
Matter
(liquid/gas)
Container
Concentration
gradient
Movement
Rate
Osmosis
Diffusion
Temperature
Kinetic
Speed
6: Diffusion in terms of the particle model
Science programmes of study: key stage 3 National curriculum in England (2013, p.8)
Critical aspects
What is to be
discerned
Concentration of
chemical
Temperature of the
medium
State of the medium
Rate of diffusion
Chemical to be
diffused
i
v
i
v
i
Rate of diffusion is
affected by the state
of the medium
i
i
v
v
i
Rate of diffusion is
different for different
chemicals
i
i
i
v
v
Rate of diffusion (of
potassium
permanganate) is
affected by
temperature