Question

1 Which particle in an atom is involved in a covalent bond?
2 Describe how a covalent bond is formed
3 What particle is made in a covalent bond?
4 Explain the difference between a covalent bond and an ionic bond
5 A carbon dioxide molecule has the formula CO,
a) What elements are in carbon dioxide?
b) How many atoms of each element are there in one molecule of carbon dioxide?
c) Draw a diagram to show how two covalent bonds are formed by sharing electrons in
carbon dioxide.​

Answer 1

Answer:

1. in a covalent bond electrons are involved

2. it is formed by sharing of electrons

4. covalent bond is formed by sharing of electrons and an ionic bond is formed by gaining & losing electrons

5.a. carbon and oxygen

b. 1 atom of carbon and two of oxygen

Answer 2

1. Electrons are involved in a covalent bond.

2. Covalent bond is formed by sharing a pair of electrons between two atoms of non-metal.

3. H2O is made in a covalent bond. Oxygen shares one electron with each hydrogen atom.

4. Ionic bond:

• Occurs during the transfer of electrons.
• Non-directional bond.
• Present only in solid-state.
• Relatively high conductivity.
• Higher melting and boiling point.

Covalent bond:

• Occurs when 2 atoms share their valence electrons.
• Directional bond.
• Present only in all 3 states: solid, liquid, gases.
• Low conductivity.
• Lower melting and boiling point.

5.

a) Carbon and oxygen are the elements in carbon dioxide.

b) One carbon and two oxygen are there in each molecule of carbon dioxide.

c) In a carbon dioxide molecule, a carbon atom is joined by four covalent bonds to two oxygen atoms, which have two covalent bonds each.  One atom of carbon combines with two atoms of oxygen to form the compound carbon dioxide.