ions test questions

• describe the bonding between the potassium ions and chloride ions in pottasium chloride

  the oppositely charged ions are strongly attracted to each other by electrostatic forces/attractions
• formula of a potassium ion

  K+
• formula of a chloride ion

  Cl-
• predict the number of electrons sulfur and chlorine will gain when they react to form ions


  the number of electrons gained is equal to 8- the group number. sulfur is in group 6, so 8-6 equals 2 electrons. chlorine is group 7, 8-7 equals 1 electron
• explain why nitrate ions cannot form ionic compounds with bromide ions

  ionic compounds can only be formed between two oppositely charged ions, positive metal and negative non metal. they are both negative non metals
• what’s the overall charge of an ionic compound

  neutral
• type of structure that ionic compounds have

  giant lattice structure
• describe the structure of a crystal of sodium chloride

  sodium chloride contains positive sodium atoms(Na+) and negative chlorine atoms(Cl-). they are arranged in a giant ionic lattice and the oppositely charged ions are held together by strong electrostatic attractions.
• why does sodium chloride have a high melting point?

  to melt sodium chloride you have to overcome the very strong forces of electrostatic attraction which requires a lot of energy.