Diffusion is the net movement of particles
Salam Academy Original Practice · Proposed mark scheme
Practise
Question bank
Original exam-style questions, mapped to your syllabus. Answers are checked for mathematical equivalence and every attempt updates your mastery.
Sign in to check answers. Your attempts build your mastery and error book.
12 questions
Which gas diffuses fastest at the same temperature?
Salam Academy Original Practice · Proposed mark scheme
Diffusion is fastest in
Salam Academy Original Practice · Proposed mark scheme
Raising the temperature makes diffusion
Salam Academy Original Practice · Proposed mark scheme
Calculate the relative molecular mass of ammonia, . (: N = 14, H = 1)
Salam Academy Original Practice · Proposed mark scheme
Diffusion is caused by
Salam Academy Original Practice · Proposed mark scheme
Ammonia and hydrogen chloride diffuse towards each other in a cm tube. The white ring forms
Salam Academy Original Practice · Proposed mark scheme
When a crystal of potassium manganate(VII) is placed in water without stirring, the purple colour slowly spreads. This shows that
Salam Academy Original Practice · Proposed mark scheme
Once particles are evenly spread out,
Salam Academy Original Practice · Proposed mark scheme
Bromine vapour () and nitrogen dioxide () are released at the same time. Which spreads faster, and why?
Salam Academy Original Practice · Proposed mark scheme
Calculate the relative molecular mass of hydrogen chloride, . (: H = 1, Cl = 35.5)
Salam Academy Original Practice · Proposed mark scheme
Two gases are released at opposite ends of a tube. A ring forms cm from gas X and cm from gas Y. Which is true?
Salam Academy Original Practice · Proposed mark scheme