Properties and Composition of K2SO4

The video explores whether potassium sulfate (K2SO4) is ionic or covalent. It explains that K2SO4 is an ionic compound, but within it, the sulfate ion has covalent bonds between sulfur and oxygen. The video uses the periodic table to show that potassium is a metal, while sulfur and oxygen are nonmetals, leading to ionic bonds. It discusses the charges of ions, with potassium forming a +1 ion and sulfate having a -2 charge, requiring two potassium ions to balance the charge. The video concludes by differentiating between ionic bonds in the compound and covalent bonds within the sulfate ion.

What type of compound is K2SO4 overall?

• Molecular

• Metallic

• Ionic

• Covalent

Which elements in K2SO4 are non-metals?

• Sulfur and Oxygen

• Sulfur and Potassium

• Potassium and Sulfur

• Potassium and Oxygen

What is the charge of the potassium ion in K2SO4?

• 2+

• 1-

• 1+

• 2-

How many potassium ions are needed to balance the charge of the sulfate ion?

• Two

• One

• Four

• Three

What is the charge of the sulfate ion in K2SO4?

• 1-

• 2-

• 2+

• 1+

What is the net charge of K2SO4?

• 2-

• 1+

• 1-

• 0

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

• Covalent

• Ionic

• Hydrogen

• Metallic

Which of the following is a polyatomic ion in K2SO4?

• Sulfate

• Potassium

• Oxygen

• Sulfur

What type of bond is formed between potassium ions and the sulfate ion?

• Hydrogen

• Metallic

• Covalent

• Ionic

What is another name for a covalent bond?

• Hydrogen bond

• Molecular bond

• Metallic bond

• Ionic bond