Covelant Bonding

Question 1

When does covalent bonding occur ?

Answer 1

In two or more non-metals

Question 2

What are the three subatomic particles?

Answer 2

Protons neutrons and electrons

Question 3

What happens when you lose electrons?

Answer 3

You will have more protons then electrons so more positive and less negative gives overall positive

Question 4

How do non-metals bond?

Answer 4

By sharing electrons

Question 5

What is covalent bonding ?

Answer 5

Covalent bonding is an electrostatic attraction between a shared pair of electrons and the positively charged nuclei of the atom

Question 6

What makes up giant covalent bonds?

Answer 6

Thousands or even millions of non metal atoms that are joined by strong covalent bonds

Question 7

How Are atoms arranged ?

Answer 7

In a regular repeating pattern called a lattice

Question 8

What is diamond made out of ?

Answer 8

Carbon atoms that are joined by strong covalent bonds

Question 9

Why are diamonds hard,very high melting point and doesn’t conduct electricity ?

Answer 9

Because electrons are fixed in covalent bonds.Each carbon atom is joined by another carbon atom by strong covalent bonds so it doesn’t have delocalised electrons .You need a lot of energy to break the strong covalent bonds between the thousands of carbon atoms

Question 10

What are allotropes of carbons?

Answer 10

They are made of carbon atoms only like diamond graphite fullerenes and carbon non tubes

Question 11

How is graphite arranged ?

Answer 11

by layers within layers joined by weak inter molecular forces.joined by 3 strong covalent bonds

Question 12

Why is graphite soft?

Answer 12

Because layers of carbon can slide from each other due to the weak force in the layers of carbon,

Question 13

How does one electron transform into a sea of delocalised electrons

Answer 13

each carbon atom is attached to three other carbons atoms by strong covalent bonds, however, one electron is not bonded and becomes delocalised and leaves the shell and becomes a sea of delocalised electrons .Because we have delocalised electrons in graphite it canform electricity

Question 14

How do they still have high melting points and boiling points ?

Answer 14

because you need a lot of energy to break the strong covalent bond between millions of atoms

Question 15

What is graphine

Answer 15

graphine is a single layer of graphite that has fallen off

Question 16

What are fullerines

Answer 16

holo, made of carbon atoms and have different shapes but are based on hexagon

Question 17

What is a bucky ball

Answer 17

they have 60 carbon atoms and was made in the lab,if the are hollow and small you can put drugs in them and send them in the body

Question 18

What are the properties of graphene

Answer 18

2d structure, low density & strong,flexible ,light and strong