The video tutorial explains the composition and dissociation of magnesium sulfate (MgSO4). It begins by identifying magnesium as a metal and sulfur and oxygen as non-metals, forming an ionic compound. The tutorial details the ionic charges: magnesium forms a 2+ ion, and the sulfate ion (SO4) has a 2- charge. These charges balance to give a net charge of zero. When MgSO4 is dissolved in water, it dissociates into magnesium ions (Mg2+) and sulfate ions (SO4 2-), both in aqueous form. The video concludes by confirming that MgSO4 consists of two ions: one magnesium ion and one sulfate ion.

What type of compound is formed by magnesium, sulfur, and oxygen in MgSO4?

• Covalent compound

• Ionic compound

• Molecular compound

• Metallic compound

What is the charge of the magnesium ion in MgSO4?

• 1+

• 2-

• 2+

• 1-

What is the charge of the sulfate ion in MgSO4?

• 2-

• 1-

• 1+

• 2+

What happens to MgSO4 when it is dissolved in water?

• It evaporates

• It forms a precipitate

• It remains unchanged

• It dissociates into ions

How many ions are produced when MgSO4 dissociates in water?

• Three ions

• Two ions

• Four ions

• One ion