The video explores whether magnesium hydroxide (Mg(OH)2) is soluble in water. It discusses solubility rules, highlighting that most hydroxide salts are only slightly soluble, with magnesium hydroxide being mostly insoluble. A solubility chart is used to confirm this, showing that Mg(OH)2 does not dissolve significantly in water. The video also suggests a practical test by adding Mg(OH)2 to water to observe its behavior. Ultimately, it concludes that magnesium hydroxide is insoluble or only slightly soluble in water.

What is the main question addressed in the video regarding magnesium hydroxide?

• Whether it is acidic or basic

• Whether it is soluble or insoluble in water

• Whether it is a metal or non-metal

• Whether it is reactive with air

According to solubility rules, how are most hydroxide salts classified?

• Highly reactive

• Slightly soluble

• Highly soluble

• Completely insoluble

What is the significance of the solubility rules in determining the solubility of compounds?

• They determine the melting point

• They help identify the state of matter

• They provide guidelines on solubility

• They predict the color change

What does the solubility chart indicate about magnesium hydroxide?

• It changes color in water

• It reacts violently with water

• It is insoluble in water

• It is highly soluble in water

What does the 'i' symbol on the solubility chart represent for magnesium hydroxide?

• It is insoluble

• It is highly soluble

• It is reactive

• It is a gas

What happens to magnesium hydroxide when placed in water according to the video?

• It dissolves completely

• It evaporates

• It remains suspended

• It falls to the bottom

What is a practical method mentioned to test the solubility of magnesium hydroxide?

• Heating it

• Mixing it with oil

• Placing it in water

• Exposing it to sunlight

What conclusion does Dr. B reach about the solubility of magnesium hydroxide?

• It is highly soluble

• It is insoluble or slightly soluble

• It is reactive with water

• It is a strong acid