Imagine that you are working in a chemistry lab with samples of two new elements: Element X and Element Y. You suspect that one element is composed of discrete molecules while the other is a continuous covalent network. You run a few experiments and make the following observations: Element X Element Y Melting Point 1967 K 215 K Boiling Point 2188 K 276 K Conductivity Does not conduct electricity Does not conduct electricity
Use the evidence from the table to answer the following questions about these elements:.
a. What evidence from the table can you use to determine which element is the molecular substance and which is the continuous covalent network? Provide only the evidence, not the explanation here
b. Which element is composed of discrete molecules? Write "Element X" or "Element Y". This is your claim.
c. What types of bonds and/or interactions are overcome when a molecular substance melts and/or boils?
d. Use the evidence from the table that you mentioned in part a, along with your answer from parte, to support your claim (part b). Make sure to include forces and energy in your response,
e. Which element exists as a continuous covalent network? Write "Element X" or "Element Y". This is your second claim
f. What types of bonds and/or interactions are overcome when this continuous covalent network melts and/or boils? (Hint: Use the table to remind yourself of the properties of this Element.)
g. Use the evidence from the table that you mentioned in part a, along with your pnswer from part f, to support your second claim (part e). Make sure to include forces and energy in your response.
h. At the atomic level, use bonding and/or interactions to explain why this continuous covalent network does not conduct electricity
I. At the atomic level, use bonding and/or interactions to explain why metals do conduct electricity