Covalent bonding

Question 1

Bonds that form between non-metal atoms

Answer 1

Covalent bonds

Question 2

Covalent bond

Answer 2

two positive nuclei are held together by their common attraction for a shared pair of
electrons.

Question 3

Dot-cross diagrams show what?

Answer 3

The outer electrons and shared pair(s) of electrons in a covalent molecule

Question 4

7 elements exist as diatomic molecules

Answer 4

hydrogen, nitrogen, oxygen, fluorine, chlorine, iodine, bromine

Question 5

Shapes of Cl-Cl, H-H, O=C=O molecules

Answer 5

linear

Question 6

Shape of water molecule

Answer 6

bent

Question 7

Shape of ammonia molecule

Answer 7

pyramidal

Question 8

Shape of methane molecule

Answer 8

tetrahedral

Question 9

Have low melting and boiling points as only weak forces of attraction between them are broken when the substance changes state
Type of bonding and structure?

Answer 9

covalent molecule

Question 10

do not conduct electricity because they do not have charged particles which are free to move.
have strong covalent bonds within the structure and only weak attractions between.

Answer 10

covalent molecules

Question 11

have a network of strong covalent bonds within one giant structure.
Type of bonding and structure?

Answer 11

covalent network

Question 12

Have very high melting and boiling points.
Do not dissolve.
Type of bonding and structure?

Answer 12

covalent network