Question : Proton number and Nucleon Number

Table 1 shows the proton numbers and nucleon number of five elements represented by J, K, L, M and N. Answer the questions that follow uisng the given symbols for the elements

a) i) Which of these are isotopes for the same element? _____________________
ii) Explain your answer in a) i) _____________________________________________

b) Do the elements in a) i) have the same chemicla properties? Why?
___________________________________________________________________________

c) State the number of neutrons in an atom of element
K __________
M __________

d) Write the electron arrangement of an atom of element
J ______________________________________
L ______________________________________

e) Draw the atomic structure of element
i) K
ii) N

Question : States of Matter

Figure 2 shows the processes involved in the changes in state of matter

a) Process I involves a change from liquied to solid
i) Name process I ________________________________________
ii) State the energy changes that occurs in process I
_______________________________________________________________

b) Process II involves a change from solid to gas without going through the liqueid state
i) Name process II ________________
ii) State the energy change that occurs in process II
______________________________________________________________
iii) Suggest one substance that can undergo this process
_______________________________________________________

c) State how the attractive forces between particles change when a substance undergoes process III
___________________________________________________________________________

d) Sketch the arrangment of particles in i) solid ii) liquid