NCERT Book Class 9 Science (Exploration) Chapter 5 Exploring Mixtures and their Separation

Chapter
Exploring Mixtures
5 and their Separation

Think It Over Have you ever wondered how sweet, white crystals of sugar are
obtained from tall, green sugarcane plants? Or how do doctors
y Why do suspended detect diseases like malaria using just a few drops of blood?
particles settle in Many such everyday activities are made possible by techniques
muddy water over based on the fascinating science of separating mixtures.
time but not in milk?
Grade 6 You have learnt about mixtures and some simple
y How is evaporation Curiosity
methods to separate them. In this chapter, you will
Chapter 9
different from boiling?
explore mixtures in greater depth, including their
y Why do you see bright properties, behaviour and the various techniques used to
rays of sunlight when
separate them. From industrial processes like sugar production
it passes through
small gaps between to life-saving medical tests, the separation of mixtures plays a
the leaves of a dense crucial role in our daily lives.
tree?