Calcium Sulfate and Ionic Bonds

The video explores whether calcium sulfate (CaSO4) is ionic or covalent. It explains that CaSO4 is an ionic compound due to the presence of a metal (calcium) and non-metals (sulfur and oxygen). The sulfate ion (SO4) within the compound has covalent bonds between sulfur and oxygen. The video also discusses the ionic charges of calcium and sulfate, which balance each other out, resulting in a net charge of zero. Overall, while the compound is ionic, the sulfate ion contains covalent bonds.

What type of compound is calcium sulfate (CaSO4)?

• Metallic

• Covalent

• Ionic

• Amphoteric

Which elements in calcium sulfate form covalent bonds?

• Calcium and sulfur

• Calcium and hydrogen

• Calcium and oxygen

• Sulfur and oxygen

What is the ionic charge of calcium in calcium sulfate?

• 2+

• 1+

• 2-

• 1-

What is the charge of the sulfate ion (SO4) in calcium sulfate?

• 1+

• 2+

• 1-

• 2-

What type of bond is formed between sulfur and oxygen in the sulfate ion?

• Ionic bond

• Covalent bond

• Hydrogen bond

• Metallic bond

Which group in the periodic table does calcium belong to?

• Group 1

• Group 2

• Group 16

• Group 17

What is the net charge of the calcium sulfate compound?

• 2+

• 1-

• 1+

• 0

What attracts the ions in calcium sulfate to form an ionic bond?

• Magnetic force

• Nuclear force

• Gravitational force

• Electrostatic force

What is the overall nature of the calcium sulfate compound?

• Amphoteric

• Ionic

• Metallic

• Covalent