Ionic and Covalent Bonding Concepts

The video explores whether calcium nitrate (Ca(NO3)2) is ionic or covalent. It concludes that calcium nitrate is an ionic compound overall, with covalent bonds present within the nitrate ion. Calcium, a metal, forms an ionic bond with the nitrate ion, which is a polyatomic ion with covalent bonds between nitrogen and oxygen. The video also discusses the charges of calcium and nitrate ions, their balance, and how they dissolve in water.

What type of bonds are present within the nitrate ion in calcium nitrate?

• Covalent bonds

• Metallic bonds

• Hydrogen bonds

• Ionic bonds

Why is calcium nitrate considered an ionic compound?

• It dissolves in water.

• It has a high melting point.

• It is composed of a metal and non-metals.

• It contains only non-metals.

What is the ionic charge of calcium in calcium nitrate?

• 2-

• 1+

• 2+

• 1-

How many nitrate ions are needed to balance the charge of one calcium ion?

• One

• Two

• Three

• Four

What is the net charge of calcium nitrate as a compound?

• 0

• 2+

• 1-

• 1+

What causes the formation of ionic bonds in calcium nitrate?

• Overlap of atomic orbitals

• Attraction between positive and negative ions

• Presence of hydrogen bonds

• Sharing of electrons

What type of compound is formed by a non-metal plus a non-metal?

• Alloy

• Covalent compound

• Metallic compound

• Ionic compound

What happens to the nitrate ion when calcium nitrate is dissolved in water?

• It reacts with water to form a new compound.

• It breaks down into individual atoms.

• It remains intact as a polyatomic ion.

• It forms a precipitate.

What is the nature of the bonds between nitrogen and oxygen in the nitrate ion?

• Strong covalent bonds

• Weak ionic bonds

• Van der Waals forces

• Metallic bonds

What is the role of the nitrate ion in the overall ionic nature of calcium nitrate?

• It acts as a catalyst.

• It forms a metallic bond.

• It balances the charge of the calcium ion.

• It provides a positive charge.