2 Bonding 2 Flashcards
State the melting points of ionic substances
High
Explain why ionic substances have high melting points.
Strong bonds between oppositely charged ions are hard to break
Will NaCl(s) conduct electricity?
No
Will NaCl (aq) conduct electricity?
Yes (aq stands for aqueous which means it is dissolved in water)
Will NaCl (l) conduct electricity?
Yes
What does molten mean?
Melted
Explain why ionic compounds do not conduct electricity when solid
Because the ions are not free to move
Explain why ionic compounds conduct electricity in solution
Because the ions are free to move
Explain why ionic compounds conduct electricity when molten
Because the ions are free to move
What does soluble mean?
Dissolves in water
What does insoluble mean?
Does not dissolve in water
Magnesium carbonate is insoluble. What do you need to do before it will conduct electricity?
Melt it
Sodium fluoride is soluble. Explain what the easiest way for it to conduct electricity is
Dissolve it in water because this does not require high temperatures
Explain why chlorine and fluorine form covalent bonds
They are both non-metals
Complete the sentence: In covalent bonds, electrons are _______________________
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