Question

PLEASE help MEDALS will be awarded!!!

do the following conduct electricity when dissolved or not? Also do they have a high or low melting point? what type of bond do they have and what type of structure?
candle wax
sodium chloride
copper sulphate
nylon
aluminium
copper

Answer 1

1. Candle wax does not conduct electricity when dissolved and it has a very high melting point
2. Sodium chloride conduct electricity pretty well since it is a metal and it has a low melting point
3. Copper sulfate also conducts electricity well and it has a low melting point
4. Nylon is not a metal therefore it does not conduct electricity well and it has a high melting point
5. Aluminum conducts electricity well and it has a low melting point
6. Copper also conducts electricity when dissolved and it has a low melting point
Hope this helps!

Answer 2

@sasquat isn't the melting point the opposite?

Answer 3

1. Candle wax is basically paraffin wax. Paraffin wax does not conduct electricity when dissolved or solid as it is a covalently bonded compound. Covalently bonded compounds have low melting points as the forces holding the molecules together are weak Van Der Waals forces, so it has a relatively low melting point (depending on what you're comparing it to, if you compare it to metals then yes it does have a low melting point, its around 50-70°C). It has covalent bonding inside the molecules and London bonds/Van Der Waals bonding neighbouring molecules together. Paraffin wax is a polymer and has a formula of CnHn+2.

2. Sodium Chloride does only conduct electricity when dissolved in water as water is slightly polar and sodium chloride is an ionic bond and the water molecules separate the ions of NaCl and allow it to conduct electricity. As a solid it does not conduct electricity. NaCl has a high melting point because ionic bonds are VERY hard to break, especially as NaCl has a crystalline structure. It has ionic bonding and permanent dipole forces. It has a crystalline structure.

Would you like me to carry on? You closed the question, so I'm not sure if you need help any more :)

Answer 4

i didnt close the question it the first one right now

Answer 5

i have a table i need to finish

Answer 6

Okay :) I have to go now but I'll be back at 11, if no one else helps by then, I will do the rest

Answer 7

ok thanks

Answer 8

3. Copper sulphate is similar to sodium chloride because they are both ionic bonds. It will conduct electricity either molten or dissolved, but not as a solid. It has a high melting point as it has ionic bonding. It has ionic bonding and permanent dipole forces. As an anhydrous substance, it is amorphous (has no shape) and its formula is CuSO4. As a hydrated copper sulphate (is mixed with water) it has a crystalline structure.

4. Nylon does not usually conduct electricity, but it will if it is wet. Nylon has a high melting point because it has hydrogen bonding as a polymer, which is very strong. They are nylon has hydrogen bonding and it has a chain structure as it is a polymer.

5. Aluminium does conduct electricity as it has metallic bonding. Metals have high melting points as there are a lot of ions bonding together which are hard to break apart. They have metallic bonding and they have a giant crystal like structure. It has a zig-zag shape to its crystal structure.

6. Copper also conduct electricity as it is a metal. It has a high melting point for the same reasons as aluminium. It has metallic bonding and also has a giant crystal like structure. It is cubic in shape.

I think these are relatively right, I hope this helps!

Answer 9

thanks alot

Answer 10

@jebonna what structure is candle wax

Answer 11

@Preetha

Answer 12

Candle wax has a solid, straight chain structure made from carbons and hydrogens, that is also known as a hydrocarbon.

Here's a picture: http://www.tokous.com/images/Pre%20Fall%202010/Chemie4.jpg

Is that what you needed?

Answer 13

yes thanks so much