Dilution/ Diffusion Flashcards
1
Q
what colour is potassium manganate when dissolved in water?
A
purple
2
Q
What happens as the potassium manganate solution is diluted?
A
the purple colour fades
3
Q
What does this experiment tell us about particles?
A
there are many small particles in potassium manganate
4
Q
What is diffusion?
A
the movement of particles from an area of high concentration to low concentration
5
Q
How does diffusion work in water?
A
random motion of particles evenly spreading out
6
Q
equation for making ammonium chloride
A
ammonia + hydrochloric acid –> ammonium chloride
7
Q
Why does the white ring of ammonium chloride form closer to the hydrochloric acid?
A
- ammonia particles smaller and lighter so diffuse more quickly
