007, the brilliant British spy has located seven mysterious substances that someone was planning on using to kill the Malaysian Prime Minister. The Prime Minister of Malaysia has a rare disease making her fatally allergic to substances with weak attractions between particles. It is your job to determine which of the 7 unknown substances (KCl, NaCl, NaBr, Cu, Cgraphite, dextrose C6H12O6, sucrose C12H22O11) are safe for the Prime Minister and which will result in an international scandal. Succeed and you will be rewarded with points and a gold star reputation, fail and the Prime Minister of Malaysia dies a horrible death.

1) According to your data, which unknowns have weak attractions? How can you group the compounds based on their physical properties (ex: melting, solubility, etc). Cite specific experimental evidence.
2) What type of conductivity was exhibited by compounds that had weak attractions? Cite specific experimental evidence.
3) Using the results of your tests, explain the nature of the bonding electrons (check under ‘Nature of bonding e-’s’ section of ‘Chemical Bond (4 Types)’ notes) within the substances the Prime Minister of Malaysia is allergic to.
4) Using your ‘Chemical Bond (4 Types)’ notes under the section for ‘Type of Elements’, identify the chemical bond for each of the possible substances for the unknowns: KCl, NaCl, NaBr, Cu, Cgraphite, dextrose C6H12O6, sucrose C12H22O11. Which specific substance(s) has weak attraction?
5) Looking back at all the past labs, what further test would you
conduct to identify the METAL CATIONS in the unknown(s) that are
IONIC?