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Module 3 Model Questions And Answers
Module 3 Model Questions And Answers 
State one benefit of adding chlorine to water (1) - Answer-Kills germs 
Suggest one possible hazard of adding chlorine to drinking water (1) - Answer-It is toxic 
Explain the decrease in the atomic radii across the period from Na to Cl (3) - Answer-1) 
nuclear charge increases 
2) electron shielding remains the same 
3) greater attraction to nucleus 
Describe and explain the trend, down the group, in the reactivity of the Group 2 
elements with water (5) -...