1. Why is water called universal solvent ?
2. Name two substances which are soluble in water.
3. Which gas dissolved in water helps animals living in water to survive ?
4. How does the solubility of a soluble solid substance change with a rise in temperature?
5. What is the solution in which no more solute can be dissolved called ?
Answers
Answer:
1. Water is called the 'universal solvent' because it dissolves a lot of substances, more than other liquids do.
2. salt, sugar
3. oxygen
4. For many solids dissolved in liquid water, the solubility increases with temperature. The increase in kinetic energy that comes with higher temperatures allows the solvent molecules to more effectively break apart the solute molecules that are held together by intermolecular attractions.
5. saturated solution
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Answer:
1] Water is called the "universal solvent" because it dissolves more substances than any other liquid. This allows the water molecule to become attracted to many other different types of molecules.
2] Sugar and salt are examples of soluble substances in water.
3] Oxygen is a natural element which no animal can live without. Fish and other aquatic animals depend on oxygen gas dissolved in water as much as people depend on oxygen gas in air.
4] For many solids dissolved in liquid water, the solubility increases with temperature. The increase in kinetic energy that comes with higher temperatures allows the solvent molecules to more effectively break apart the solute molecules that are held together by intermolecular attractions.
5] The solution in which no more Solute can dissolve is called a saturated solution. For example: salt dissolves in water.