diffusion

• What is the definition of diffusion?

  Diffusion is the movement of particles from an area of high concentration to an area of low concentration.
• What type of process is diffusion?

  Diffusion is a passive process, meaning it doesn't require energy input.
• In which states of matter does diffusion occur?

  Diffusion occurs in gases, liquids, and even solids, though at different rates.
• What are the key points of diffusion?

  • Particles move randomly
  • Net movement is from high to low concentration
  • Continues until equilibrium is reached (equal concentration throughout)
• What is the primary driving force behind diffusion?

  The primary driving force behind diffusion is the concentration gradient.
• How does the concentration gradient affect the rate of diffusion?

  The steeper the concentration gradient, the faster the rate of diffusion.
• What happens to diffusion when the concentration gradient is eliminated?

  Diffusion continues until the gradient is eliminated, resulting in dynamic equilibrium.
• What will happen to food coloring in water over time due to diffusion?

  The color will spread evenly throughout the water.
• What is the effect of temperature on diffusion?

  Higher temperatures increase particle movement, speeding up diffusion.
• How does particle size affect diffusion rate?

  Smaller particles diffuse faster than larger ones.
• What is the relationship between distance and diffusion rate?

  Shorter distances result in faster diffusion.
• How does surface area influence diffusion rate?

  Larger surface areas allow for faster diffusion.
• In a cell, what will happen to glucose molecules if they are more concentrated outside the cell than inside?

  Glucose will move into the cell.
• What happens to the rate of diffusion as the concentration difference decreases?

  The rate of diffusion decreases as the concentration difference decreases.
• What occurs to the net movement of particles as diffusion progresses?

  The net movement of particles slows down over time as the concentration gradient decreases.
• When is the rate of diffusion at its fastest?

  The rate of diffusion is at its fastest when the concentration gradient is steepest.
• In a school science experiment, when would you expect the rate of diffusion to be the fastest after adding food coloring to water?

  The rate of diffusion is fastest immediately after the drop is added to the water.
• What are the factors affecting diffusion rate?

  1. Temperature: Higher = Faster
  2. Particle size: Smaller = Faster
  3. Concentration gradient: Steeper = Faster
  4. Distance: Shorter = Faster
  5. Surface area: Bigger = Faster
• Which conditions would make sugar dissolve faster in tea?

  Using hot tea and stirring.
• What are the factors affecting the rate of diffusion?

  Heat, particle size, concentration difference, distance, and surface area
• How does heat affect the rate of diffusion?

  Higher temperatures increase the speed of diffusion
• What is the relationship between particle size and diffusion rate?

  Smaller particles diffuse faster than larger particles
• How does concentration difference influence diffusion?

  A larger concentration difference results in a faster diffusion rate
• What effect does distance have on diffusion speed?

  Shorter distances lead to faster diffusion
• How does surface area affect the rate of diffusion?

  A larger surface area allows for faster diffusion
• What are some everyday examples of diffusion?

  • Smell spreading when cooking
  • Tea brewing
  • Air fresheners spreading scent
  • Salt dissolving in water
  • Helium balloons deflating
• What is diffusion?


  Diffusion is the process where particles spread out on their own
• Why does the smell of food spread throughout the house when cooking?

  Because of diffusion, where scent particles spread out in the air
• How does tea brewing illustrate diffusion?

  Tea particles diffuse into hot water, spreading flavor and color
• How do air fresheners utilize diffusion?

  They release scent molecules that spread through the air
• What happens to salt when added to food?

  Salt crystals diffuse in water, spreading their flavor
• Why do helium balloons deflate over time?

  Helium particles diffuse through the balloon material
• What is the importance of diffusion in cellular respiration?

  Oxygen diffuses into cells while carbon dioxide diffuses out
• How does diffusion aid in nutrient absorption?

  Nutrients diffuse from the small intestine into the bloodstream
• What role does diffusion play in waste removal from cells?

  Waste products diffuse out of cells for excretion
• How does diffusion contribute to nerve signaling?

  Neurotransmitters diffuse across synapses to transmit signals
• What is the significance of diffusion in plant nutrition?

  Water and minerals diffuse into plant roots from the soil
• Why is diffusion essential for living organisms?

  It allows for the passive movement of substances necessary for life
• What are the key processes in which diffusion is important in biological systems?

  • Cellular respiration
  • Nutrient absorption
  • Waste removal
  • Nerve signaling
  • Plant nutrition