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š¬ Think about it
From making sugar in a factory to a life-saving blood test, separating mixtures is everywhere. You already know some simple methods — now let us go deeper into how mixtures behave and how we pull them apart.
What will we explore about mixtures in this chapter?
- We will study the properties and behaviour of mixtures.
- We will learn the various techniques used to separate them.
- We will see how separation is used from industry to medicine.
Example:
Sugar production and life-saving medical tests both rely on separating mixtures.
š Think It Over
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Why do suspended particles settle in muddy water over time but not in milk?
Mud particles are large and heavy, so gravity pulls them down; milk's particles are tiny (colloid-sized), so they stay spread out. -
How is evaporation different from boiling?
Evaporation is slow and happens only at the surface at any temperature; boiling is fast and happens throughout the liquid at its boiling point. -
Why do you see bright rays of sunlight when it passes through small gaps between the leaves of a dense tree?
Tiny dust and water particles in the air scatter the light, making its path visible — this is the Tyndall effect.
ā Test Yourself
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Name two everyday uses of separating mixtures.
View Answer
Making sugar from sugarcane, and medical blood tests. -
What two things about mixtures will we study?
View Answer
Their properties and behaviour, and how to separate them.
