Solubility Secrets: Exploring How Substances Dissolve in Water

The video explores the concept of solubility, defining key terms like solubility, solvent, and solute. It explains how water acts as a universal solvent due to its polar nature, using the example of dissolving salt. The video highlights the importance of solubility in biological processes and encourages viewers to experiment with solubility at home using common ingredients.

What is the term used to describe the substance that gets dissolved in a solution?

• Solvent

• Solute

• Solution

• Suspension

What happens to salt when it is stirred into water?

• It floats on the surface

• It forms a suspension

• It remains visible

• It dissolves and disappears

Why is water considered a polar molecule?

• It has a positive and a negative side

• It has a symmetrical shape

• It is made of only hydrogen atoms

• It has a neutral charge

Why is water often referred to as a universal solvent?

• It can dissolve all substances

• It can dissolve many different substances

• It can dissolve only non-polar substances

• It cannot dissolve any substances

What happens to sodium and chloride ions when salt dissolves in water?

• They evaporate

• They dissociate and mix with water

• They remain as a solid

• They form a new compound

What is the key difference between a solution and a suspension?

• A suspension is clear and transparent

• A solution has individual molecules surrounded by solvent

• A suspension has dissolved ions

• A solution has larger particles

Why are substances like oil insoluble in water?

• They are polar molecules

• They are already dissolved

• They are too heavy

• They have no charge for water to interact with

How does solubility play a role in the human body?

• It helps in the digestion of food

• It prevents nutrient absorption

• It causes dehydration

• It stops waste removal

What percentage of the atmosphere is composed of oxygen?

• 21%

• 50%

• 0.04%

• 78%

Which of the following is NOT a common ingredient to test solubility at home?

• Salt

• Sugar

• Metal

• Flour