science diffusion
Cards (13)
- Examples of Diffusion:
- Perfume: Perfume particles diffuse through the air when sprayed in a room
- Food Coloring in Water: Dye molecules spread in water when food coloring is added
- Oxygen in Cells: Oxygen from the air diffuses into body cells for cellular respiration
- Diffusion occurs in gases, liquids, and solids and is driven by the random motion of particles
- Diffusion is the movement of particles from an area of high concentration to an area of low concentration
- Factors Affecting Diffusion:
- Temperature: Higher temperatures increase particle motion speed, leading to faster diffusion
- Concentration Gradient: A larger difference in concentration results in faster diffusion
- Surface Area: Larger surface areas allow for more contact between particles, speeding up diffusion
- Diffusion in Gases, Liquids, and Solids:
- Gases: Diffusion is rapid due to constant motion and weak forces of attraction between gas particles
- Liquids: Diffusion is slower than in gases due to stronger intermolecular forces
- Solids: Diffusion is slowest as particles can only move within the lattice structure
- the brown bromine gas has spread and particles are moving randomly it is a gas which means particles are moving very fast it spreads to air and moved to an area of high concentration and soon mixes when mixed the pigmente brown becomes light brow
- Ammonia particles evaporate from concentrated ammonia solution
- Hydrogen chloride particles evaporate from concentrated hydrochloric acid
- The two sets of particles diffuse through the particles of the air towards each other
- When they meet, they react together to form ammonium chloride, a white solid
- The white ring of powder does not form in the middle of the glass tube because the two gases diffuse at different speeds
- Lighter gases diffuse more quickly, and heavier gases diffuse more slowly
- The white ring forms nearer to the hydrochloric acid end, indicating that ammonia particles must be diffusing faster because they are lighter