Ionic Compounds: Structure, Properties, and Formulas Explained

The video tutorial explains ionic compounds, focusing on their structure, properties, and how to determine their formulas. It covers ionic bonding, the formation of lattice structures, and the properties of ionic compounds, such as high melting and boiling points and electrical conductivity when dissolved. The tutorial also details how to determine the formulas of ionic compounds using examples like sodium chloride and magnesium chloride, and introduces more complex compounds like calcium hydroxide and aluminium sulphate.

What is the primary process involved in forming an ionic bond?

• Sharing of electrons between atoms

• Creation of a metallic bond

• Transfer of electrons from one atom to another

• Formation of a covalent bond

In a lattice structure of an ionic compound, how are the ions arranged?

• In a linear chain

• In pairs of positive ions

• Randomly scattered

• Alternating positive and negative ions

Why do ionic compounds have high melting and boiling points?

• Because of strong ionic bonds

• Because of strong covalent bonds

• Due to weak metallic bonds

• Due to weak ionic bonds

Under what condition can ionic compounds conduct electricity?

• When in gaseous form

• When frozen

• When melted or dissolved in water

• When in solid form

What is the formula for sodium chloride?

• NaCl2

• Na2Cl2

• Na2Cl

• NaCl

How many chloride ions are needed to balance one magnesium ion in magnesium chloride?

• One

• Two

• Three

• Four

What is the charge of a hydroxide ion?

• 2 plus

• 2 minus

• 1 plus

• 1 minus

What is the formula for calcium hydroxide?

• CaOH

• CaOH2

• Ca2OH

• Ca2OH2

How many aluminum ions are needed to balance three sulfate ions in aluminum sulfate?

• Two

• One

• Four

• Three

Which of the following is a nitrate ion?

• SO4 2 minus

• NO3 minus

• NH4 plus

• CO3 2 minus