C2 Chemical Bonding

C2 Chemical Bonding

Learning objectives

CORE

1. Describe the formation of positive ions, known as cations, and negative ions, known as anions

2. State that an ionic bond is a strong electrostatic attraction between oppositely charged ions

3. Describe the formation of ionic bonds between elements from Group I and Group VII, including the use of dot-and-cross diagrams

Learning objectives

SUPPLEMENTARY

5. Describe the formation of ionic bonds between ions of metallic and non-metallic elements, including the use of dot-and-cross diagrams

6. Explain in terms of structure and bonding the properties of ionic compounds:
(a) high melting points and boiling points
(b) good electrical conductivity when aqueous or molten and poor when solid

7. Describe the giant lattice structure of ionic compounds as a regular arrangement of alternating positive and negative ions, exemplified by sodium chloride

Learning objectives

SUPPLEMENTARY

7. Describe the giant lattice structure of ionic compounds as a regular arrangement of alternating positive and negative ions, exemplified by sodium chloride

Learning objectives

CORE

4. Describe the properties of ionic compounds:
(a) high melting points and boiling points
(b) good electrical conductivity when aqueous or molten and poor when solid
(c) generally soluble in water

C4.05 Ions and Ionic Bonding

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Multiple Choice

What changes occurs to an atom when it forms a negative ion?

• it loses electrons

• it gains protons

• it gains electrons

• it loses protons

Multiple Choice

Lithium and Chlorine react together to form lithium chloride.

During formation, each lithium atom _______(1) one ______(2) which is completely ________(3) to the chlorine atom.

• A

• B

• C

• D

Multiple Choice

Which of the statement describes ionic bonding?

• electrostatic attraction between atoms

• electrostatic attraction between positively charged particles and delocalised electrons

• electrostatic attraction between oppositely charged ions

• electrostatic attraction between the nuclei of two atoms and a shared pair of electrons

Multiple Choice

Magnesium is a Group II element and Chlorine is a Group VII element.

These elements react together to form an ionic compound.

Which row is correct?

• A

• B

• C

• D