Eventually all the ice changed to a gas. Figure 2 shows how the temperature changed over 800 seconds.
Figure 2
200
150
100
Temperature
in C
50
0
600
800
700
100
200
300
400 500
Time In seconds
50
(e) What change of state occurs between 200 seconds and 750 seconds?
0
Explain how Figure 2 shows that the specific latent heat of vaporisation is greater than the
specific latent heat of fusion.
Use data from Figure 2.
(Total 10 marks)

a lot of it means it can be "burned" for energy and sold at one price. if it is scarce, the price will go up

if the person is shown to have +90n, then ans is -10n.

if the person is shown to have -90n, then ans is +10n.

the best answer for these questions would be:

1.            c. is smaller

2.            d) concrete operational

3.            b) interaction with the environment – the children interact with their environment can them learn more.

4.            a) parents who reason openly with children can limit a child’s cognitive ability.