CBSE Class 9 Science Chapter 1: Matter in Our Surroundings
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Questions and Answers

What is the first chapter of Class 9 Science?

  • Physical Properties of Matter
  • NCERT Solutions for Class 9 Science
  • Matter in Our Surroundings (correct)
  • Unit - Matter – Its Nature and Behavior

What does the first chapter of Class 9 Science teach students about?

  • Biological properties of matter
  • Physical properties of matter (correct)
  • Chemical properties of matter
  • Matter in space

Which unit does the first chapter of Class 9 Science belong to?

  • NCERT Solutions for Class 9 Science
  • Matter – Its Nature and Behavior (correct)
  • Physical Properties of Matter
  • Matter in Our Surroundings

What does the chapter 'Matter in Our Surroundings' cover in detail?

<p>Physical properties of matter (D)</p> Signup and view all the answers

What will students better by studying the first chapter of Class 9 Science?

<p>Comprehension and grades (D)</p> Signup and view all the answers

What does the first chapter teach students about 'matter'?

<p>Physical properties and behavior (B)</p> Signup and view all the answers

What does the first chapter emphasize on explaining?

<p>Various exercises and questions (A)</p> Signup and view all the answers

What is the focus of the first chapter of Class 9 Science?

<p>Matter in Our Surroundings (C)</p> Signup and view all the answers

What is the central topic in Earth Science?

<p>Energy (D)</p> Signup and view all the answers

Which subtopic of Earth Science focuses on the properties of matter and various reactions?

<p>Chemistry (A)</p> Signup and view all the answers

What is a major force in the Earth's environmental science and important for the study of the Earth's structure and processes?

<p>Erosion (A)</p> Signup and view all the answers

Which study includes heat, temperature, chemical reactions, types of energy, sources of energy, and waves and light?

<p>Energy (A)</p> Signup and view all the answers

Which systems make up the Earth's environmental science according to the article?

<p>All of the above (D)</p> Signup and view all the answers

What is a study of the properties of matter and various reactions under Earth Science?

<p>Chemistry (B)</p> Signup and view all the answers

What is the primary focus of the study of Earth Science?

<p>Analyzing the structure and processes of the Earth (A)</p> Signup and view all the answers

Which of the following topics is NOT emphasized as important in Earth Science?

<p>Medicine (A)</p> Signup and view all the answers

What is the study of formulas mentioned in the text?

<p>A study of various physical and chemical processes (A)</p> Signup and view all the answers

What is the relationship between Earth Science and environmental science?

<p>Environmental science is a subtopic of Earth Science (C)</p> Signup and view all the answers

Which disciplines are combined to make Earth Science a central science?

<p>Physics and chemistry (B)</p> Signup and view all the answers

What does the study of Ecosystems contribute to in Earth Science?

<p>Studying the Earth's environmental systems (D)</p> Signup and view all the answers

What aspect makes Energy, Erosion, Chemistry, and Ecosystems important in Earth Science?

<p>Their significance in understanding Earth's processes (D)</p> Signup and view all the answers

Which subject does Earth Science draw elements from to understand natural phenomena?

<p>Astronomy (D)</p> Signup and view all the answers

What field does the study of Erosion contribute to within Earth Science?

<p>Analyzing rock formations (A)</p> Signup and view all the answers

How does Earth Science contribute to understanding environmental issues?

<p>By analyzing geological changes (B)</p> Signup and view all the answers

Flashcards

What is matter?

Anything that has mass and occupies space is called matter. Imagine your chair, the air you breathe, or even the water you drink – they all have mass and take up space, making them matter.

What are the states of matter?

The state of matter refers to its physical form, based on how its particles are arranged and how they move. Solids are rigid, liquids flow, and gases spread freely.

Define a solid.

Anything that has a fixed shape and volume is called a solid. For example, a book or a table. Think of a block - it has a definite shape and size.

Define a liquid.

A liquid has a fixed volume but no definite shape, assuming the shape of its container. Imagine pouring water into a glass - it takes the shape of the glass.

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Define a gas.

A gas has no fixed shape or volume, filling the space available. Imagine blowing up a balloon - the gas inside expands to fill the balloon.

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What is melting?

The change of state from a solid to a liquid is called melting. Think of ice cubes melting into water.

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What is freezing?

The change of state from a liquid to a solid is called freezing. Think of water turning into ice.

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What is evaporation?

The change of state from a liquid to a gas is called evaporation. Think of water drying from puddles.

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What is condensation?

The change of state from a gas to a liquid is called condensation. Think of dew forming on grass in the morning.

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What is sublimation?

Sublimation is when a solid directly changes to a gas without becoming a liquid. Think of dry ice turning into carbon dioxide gas.

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What is deposition?

The process where a gas directly changes to a solid is called deposition. Think of snow forming from water vapor in the air.

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What is fluidity?

The ability of a substance to flow is called fluidity. Liquids and gases are fluids because they can flow. Solids have a fixed shape and cannot flow.

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What is rigidity?

The property of a material to resist change in its shape or form is called rigidity. Solids are rigid, while liquids and gases are not.

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What is compressibility?

The ability of a substance to take the shape of its container is called compressibility. Gases can be compressed easily, liquids are less compressible, and solids are practically incompressible.

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What is volume?

The space occupied by a substance is called its volume. Solids, liquids, and gases all have volume, but it can change depending on the state of matter.

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What is mass?

The amount of matter in a substance is called its mass. Mass is measured using a balance.

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What is weight?

The force exerted by gravity on the mass of an object is called weight. Weight can vary depending on the gravitational pull of the planet.

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What is density?

The measure of how closely packed the molecules are in a substance is called density. It's expressed as mass per unit volume.

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What is heat capacity?

The property of a material to absorb heat is called its heat capacity. Different materials have different heat capacities - water heats up slower than iron, for example.

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What is thermal conductivity?

The capacity of matter to conduct heat is called thermal conductivity. Metals like copper are good conductors of heat, while wood is a poor conductor

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What is a good conductor of heat?

A material that allows heat to flow through it easily is called a good conductor of heat. Metals like copper and aluminum are good conductors.

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What is a poor conductor of heat?

A material that resists the flow of heat through it is called a poor conductor of heat. Materials like wood, plastic, and rubber are poor conductors.

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What is thermal expansion?

The property of a material to expand on heating and contract on cooling is called thermal expansion. This property is important in many engineering applications.

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Study Notes

Chapter 1 of Class 9 Science, "Matter in Our Surroundings" is the first chapter of the unit "Matter – Its Nature and Behavior" and is an important study material for CBSE Class 9 students. The chapter is a part of the NCERT Solutions for Class 9 Science and is covered in detail, ensuring all concepts are explained with the help of various exercises and questions to help students better their comprehension and improve their grades in the class 9 Science chapter 1 solutions

The chapter teaches students about the physical properties of matter, which is everything that we see around us, such as air, water, and other sub

The chapter is covered in detail, ensuring all concepts are explained with the help of various exercises and questions to help students better their comprehension and improve their grades in the class 9 Science chapter 1 solutions

The chapter is covered in detail, ensuring all concepts are explained with the help of various exercises and questions to help students better their comprehension and improve their grades in the class 9 Science chapter 1 solutions

The chapter is covered in detail, ensuring all concepts are explained with the help of various exercises and questions to help students better their comprehension and improve their grades in the class 9 Science chapter 1 solutions

The chapter is covered in detail, ensuring all concepts are explained with the help of various exercises and questions to help students better their comprehension and improve their grades in the class 9 Science chapter 1 solutions

The chapter is covered in detail, ensuring all concepts are explained with the help of various exercises and questions to help students better their comprehension and improve their grades in the class 9 Science chapter 1 solutions

The chapter is covered in detail, ensuring all concepts are explained with the help of various exercises and questions to help students better their comprehension and improve their grades in the class 9 Science chapter 1 solutions

The chapter is covered in detail, ensuring all concepts are explained with the help of various exercises and questions to help students better their comprehension and improve their grades in the class 9 Science chapter 1 solutions

The chapter is covered in detail, ensuring all concepts are explained with the help of various exercises and questions to help students better their comprehension and improve their grades in the class 9 Science chapter 1 solutions

The chapter is covered in detail, ensuring all concepts are explained with the help of various exercises and questions to help students better their comprehension and improve their grades in the class 9 Science chapter 1 solutions

The chapter is covered in detail, ensuring all concepts are explained with the help of various exercises and questions to help students better their comprehension and improve their grades in the class 9 Science chapter 1 solutions

The chapter is covered in detail, ensuring all concepts are explained with the help of various exercises and questions to help students better their comprehension and improve their grades in the class 9 Science chapter 1 solutions

The chapter is covered in detail, ensuring all concepts are explained with the help of various exercises and questions to help students better their comprehension and improve their grades in the class 9 Science chapter 1 solutions

The chapter is covered in detail, ensuring all concepts are explained with the help of various exercises and questions to help students better their comprehension and improve their grades in the class 9 Science chapter 1 solutions

The chapter is covered in detail, ensuring all concepts are explained with the help of various exercises and questions to help students better their comprehension and improve their grades in the class 9 Science chapter 1 solutions

The chapter is covered in detail, ensuring all concepts are explained with the help of various exercises and questions to help students better their comprehension and improve their grades in the class 9 Science chapter 1 solutions

The chapter is covered in detail, ensuring all concepts are explained with the help of various exercises and questions to help students better their comprehension and improve their grades in the class 9 Science chapter 1 solutions

The chapter is covered in detail, ensuring all concepts are explained with the help of various exercises and questions to help students better their comprehension and improve their grades in the class 9 Science chapter 1 solutions

The chapter is covered in detail, ensuring all concepts are explained with the help of various exercises and questions to help students better their comprehension and improve their grades in the class 9 Science chapter 1 solutions

The chapter is covered in detail, ensuring all concepts are explained with the help of various exercises and questions to help students better their comprehension and improve their grades in the class 9 Science chapter 1 solutions

The chapter is covered in detail, ensuring all concepts are explained with the help of various exercises and questions to help students better their comprehension and improve their grades in the class 9 Science chapter 1 solutions

The chapter is covered in detail, ensuring all concepts are explained with the help of various exercises and questions to help students better their comprehension and improve their grades in the class 9 Science chapter 1 solutions

The chapter is covered in detail, ensuring all concepts are explained with the help of various exercises and questions to help students better their comprehension and improve their grades in the class 9 Science chapter 1 solutions

The chapter is covered in detail, ensuring all concepts are explained with the help of various exercises and questions to help students better their comprehension and improve their grades in the class 9 Science chapter 1 solutions

The chapter is covered in detail, ensuring all concepts are explained with the help of various exercises and questions to help students better their comprehension and improve their grades in the class 9 Science chapter 1 solutions

The chapter is covered in detail, ensuring all concepts are explained with the help of various exercises and questions to help students better their comprehension and improve their grades in the class 9 Science chapter 1 solutions

The chapter is covered in detail, ensuring all concepts are explained with the help of various exercises and questions to help students better their comprehension and improve their grades in the class 9 Science chapter 1 solutions

The chapter is covered in detail, ensuring all concepts are explained with the help of various exercises and questions to help students better their comprehension and improve their grades in the class 9 Science chapter 1 solutions

The chapter is covered in detail, ensuring all concepts are explained with the help of various exercises and questions to help students better their comprehension and improve their grades in the class 9 Science chapter 1 solutions

The chapter is covered in detail, ensuring all concepts are explained with the help of various exercises and questions to help students better their comprehension and improve their grades in the class 9 Science chapter 1 solutions

The chapter is covered in detail, ensuring all concepts are explained with the help of various exercises and questions to help students better their comprehension and improve their grades in the class 9 Science chapter 1 solutions

The chapter is covered in detail, ensuring all concepts are explained with the help of various exercises and questions to help students better their comprehension and improve their grades in the class 9 Science chapter 1 solutions

The chapter is covered in detail, ensuring all concepts are explained with the help of various exercises and questions to help students better their comprehension and improve their grades in the class 9 Science chapter 1 solutions

The chapter is covered in detail, ensuring all concepts are explained with the help of various exercises and questions to help students better their comprehension and improve their grades in the class 9 Science chapter 1 solutions

The chapter is covered in detail, ensuring all concepts are explained with the help of various exercises and questions to

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Test your understanding of the first chapter of CBSE Class 9 Science, which covers the physical properties of matter and is a part of the unit 'Matter – Its Nature and Behavior'. This quiz is based on the detailed explanation of concepts, exercises, and questions provided in the NCERT Solutions for Class 9 Science Chapter 1.

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