chemistry: Separation techniques ,particles,reactivity series

(2)

water boils to form steam

water vapour condenses to form pure water

Explain how the apparatus could be improved to increase the amount of pure water collected from the same volume of sea water.(2)

use a condenser

to increase effectiveness of cooling

Describe the process used to separate 2 liquids with different boiling points.(3)

Fractional distillation

heat

nickel boils off first

State how many times greater the concentration of hydrogen ions is in the acid of pH 1 than in the acid of pH 2.(1)

x10

the question in the picture

from B to C:

graph is flat because particle in solids use energy to break intermolecular bonds

from A to B:

graph rises because particles in fixed positions

vibrate rapidly as temp increases

from C to D:

graph rises because particles in liquid move past one another

particle move more