(a) (b) (c) Figure 3 shows the changes that take place between states of matter. Some of them have been Identified and others labelled. GAS (1) (ii) (iii) (i) - (ii) Temperature (C) H Give the names of the processes I. II. 100 I H G Name one substance that can undergo process F when left in an open container in the laboratory.... 67 Figure 4 shows the heating curve for water. 50 II LIQUID 0- Freezing The process J is called deposition. Using water as an example, write an equation that represents the process of deposition. -10 SOLID Figure 3 M Vaporization G N Powered By: www.manyamfranchise.com 0 R Figure 4 Give the names of the intermolecular forces of attraction in the segments: I Heating time (min) MN II RS The heats of fusion and vaporization of water are 334.4 Jg and 1159.4 Jg respectively. Explain why there is a bit difference between the two How is the difference reflected in the curve? Coal, oil and natural gas are major sources of energy. They are known as fossil fuels. Hydrogen is also a source of energy. (i) state and explain two reasons why hydrogen is a very attractive fuel compared to fossil fuels. (ii) State one disadvantage of using hydrogen fuel instead of fossil fuels.