Specific Aim i To appreciate how the classification

Specific Aim • (i) To appreciate how the classification is done based on Fluidity, Density and Solubility. • (ii) To know the condition at which an object floats or sinks • (iii) To know the difference between soluble and miscible.

Some questions and questions • • • • • Question: State the reason due to which liquids can flow. Answer: In liquids, the particles are packed loosely. So the particles can slide over each other and thus flow. Question: What will happen when we add sugar with water? Answer: The sugar will disappear in water. Question: What will happen if we add mustard oil with water? Answer: Mustard oil will float on water. Question: Why does mustard oil float on water? Answer: Oil is less dense than water. Question: Why do we see sometimes a wood piece float on water, whereas an iron sheet sinks in water? Answer: Density of wood is less than water.

Introduction. • You know cadets • Liquids and gases can flow from one place to another place. • Salt, sugar etc. mix with water, whereas mustard oil floats on water. • Today, we shall discuss about Fluidity, Density and Solubility!

Important Points Fluids: The substances that can flow from one place to another place are known as Fluids. e. g Liquids and Gases. Density: The ratio of mass of an object to its volume is known as Density Note: o A solid will float in a liquid, if the density of the material of the solid is smaller than the density of the liquid. o A solid will sink in a liquid, if the density of the material of the solid is more than the density of the liquid.

Important Points o o o Solubility: Solubility means dissolving capacity. Solvent: The liquid which can dissolve a solid. Solute: The solid which is dissolved by a liquid. Solution: Solute and Solvent together is known as Solution. o Note: o A Solute is said to be Soluble in a liquid, if it can be dissolved by that liquid e. g. Sugar is soluble in water. o A Solute is said to be insoluble in a liquid, if it cannot be dissolved by that liquid. e. g. Sand is insoluble in water. o Miscible: If two liquids mix with each other then they are said to be miscible. e. g. Milk and Water are miscible liquids o Immiscible: If two liquids do not mix with each other then they are said to be immiscible. e. g. Oil and Water are immiscible liquids

Questions and Answers • • • Question: What are Fluids? Answer: The substances that can flow from one place to another place are known as Fluids. Question: What is Solute? Answer: The solid which is dissolved by a liquid is known as Solute Question: What is a solution? Answer: Solute and Solvent together are known as Solution.

Questions and Answers • • • Question: What do you mean by Miscible liquids? Answer: If two liquids mix with each other then they are said to be Miscible liquids. Question: What is Density? Answer: The ratio of mass of an object to its volume is known as its Density. Question: What does an object sink in a liquid? Answer: An object will sink in a liquid, if the density of the material of the object is more than the density of the liquid.

Question? • Question: Why does a fluid can flow but not a solid? • Answer: In a liquid state, the particles are packed loosely. So the particles can slide over each other and thus flow. In a gaseous state, the particles far away from each other, so the particles can flow freely. In a solid state, the particles are packed together. Most solids are hard, have definite shape and size, and cannot be compressed easily. So, solids cannot flow.