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Flashcards in Structure And Bonding Of Substances Deck (6)
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1
Q

Why does zinc have a high melting point?

A

Zinc has electrostatic forces of attraction between opposite metal ions and delocalised electrons meaning it needs a lot of energy to separate metal ions

2
Q

Why does sodium chloride have a high melting point?

A

Sodium chloride has electrostatic forces of attraction between opposite charged ions meaning it needs a lot of energy to separate ions

3
Q

Why does diamond have a high melting point?

A

Diamond has strong covalent bonds between all atoms and requires a lot of energy to break all four bonds.

4
Q

Why does chlorine have a low melting point?

A

It has weak intermolecular forces between molecules so requires little energy to separate the molecules.

5
Q

Why can diamond not dissolve in water?

A

Water cannot separate its atoms

6
Q

Why can sodium chloride dissolve in water?

A

Water can separate its ions