Class 8 Science — Chapter 7: Particulate Nature of Matter

What you'll learn

• ▸Particulate Nature of Matter
• ▸Interparticle Spaces
• ▸Interparticle Forces of Attraction
• ▸Characteristics of the Solid State
• ▸Melting and Melting Point
• ▸Characteristics of the Liquid State
• ▸Historical Perspective: Acharya Kanad's 'Parmanu'

Chapter Summary

--- PAGE 1 --- Particulate Nature of Matter 7 0877CH07 Probe and ponder * Why is it possible to pile up stones or sand, but not a liquid like water? * Why does water take the shape of folded hands but lose that shape when released? * We cannot see air, so how does it add weight to an inflated balloon? * Is the air we breathe today the same that existed thousands of years ago? * Share your questions __________________________ __________________________ ? --- PAGE 2 --- Chapter 7 – Particulate Nature of Matter 99 You might have collected pebbles and stones from the sand while playing on a riverbank or a beach. Where do these pebbles, stones, and sand come from? In the mountains, rocks gradually break down due to erosion. Rivers flowing through these regions carry along the eroded rock pieces. As the rivers flow, they continue to break down the rocks further into pebbles, stones, sand; and transport large quantities of them to the plains. The bigger rocks are eventually…

Practice Questions from this Chapter

Tap "Get Solution" on any question to ask our AI tutor.

1. Show me how particles move. Get Solution →
2. Explain different states of matter. Get Solution →
3. Describe what an atom is. Get Solution →
4. What is the basic unit that makes up a larger piece of a substance or material called? Get Solution →
5. What is the term for the spaces that exist between the particles of matter? Get Solution →
6. According to the text, what are the forces that hold the constituent particles of matter together called? Get Solution →
7. Which state of matter is described as having a definite shape and a definite volume? Get Solution →
8. What is the primary type of motion that particles in a solid can perform? Get Solution →

Did you know?

• 💡 Every time you breathe, you inhale millions of atoms that dinosaurs once exhaled.
• 💡 There are more water molecules in a single glass than all the glasses of water on Earth.
• 💡 Even a tiny speck of dust contains billions of atoms constantly moving and vibrating.
• 💡 Diamonds and the graphite in pencils are both made entirely of carbon atoms.
• 💡 Smells happen because tiny particles from objects float into your nose and your brain identifies them.

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