Covalent Bonding Flashcards Preview

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Flashcards in Covalent Bonding Deck (15):
1

What are covalent bonds?

A shared pair of electrons between two non metals

2

What are intRAmolecualr bonds?

Bonds inside the molecule
-These are VERY STRONG COVALENT BONDS

3

what are IntERmolecular bonds

Forces between molecues, strength depends on the side of the molecule.
The increase in the size of molecules=STRONGR molecular forces

4

Why does graphite leave a mark on paper when rubbed?

-The weak forces allow there to be a thin layer of graphite left on the paper

5

What allows graphite to conduct electricity

They have de localised electrons

6

Why is graphite a good lubcricant?

Slippery layers
High Melting Point

7

Why are diamonds so strong

They have many extremely strong covalent bonds

8

How many bonds hold the carbon atoms together in graphite?

3

9

What holds together the layers of graphite?

Weak intermolecular forces

10

What element is graphite and diamond made of ?

Carbon

11

What structures do diamond and graphite form?

Giant covalent

12

How many bonds hold the carbon atoms in diamonds?

4

13

Is graphite a good electrical conducter

yes

14

Is graphite hard or soft

soft

15

How are the melting points of diamond and graphite

Very high