States of Matter for Class 9

States of Matter for class 9. Read this powerpoint presentation to learn about what is states of matter that important for beginners of class 9th chemistry.

1. States of Matter Anoop Singh Nagi

2. Introduction 2 Matter is anything that occupies space and has mass. It exists in three primary states : Solids Liquids Gases

3. 3 1. The Solid State

4. The Solid State 4 They have a fixed shape and volume. The particles in a solid are closely packed together and maintain their relative positions. The particles in a solid are arranged in a regular and organized pattern. The particles in a solid vibrate and rotate around fixed positions. They are held together by strong intermolecular forces, such as ionic, covalent, or metallic bonds. They generally have higher densities compared to liquids and gases. They exhibit various properties depending on their composition and structure. Examples of the solid state are – wood, plastic, iron, glass etc.

5. 5 2. The Liquid State

6. The Liquid State 6 They do not have a fixed shape but have a fixed volume. They take the shape of the container. The particles in a liquid are close together but not as tightly packed as in solids. They can slide past one another, allowing liquids to flow and take the shape of the container. They are held together by weaker intermolecular forces compared to solids. They generally have a higher density compared to gases but a lower density compared to solids. The density of a liquid can vary depending on its composition and temperature. Examples of the liquids are – water, milk, juice, oil etc .

7. 7 3. The Gaseous State

8. The Gaseous State 8 Gases do not have a fixed shape or volume. They expand to fill the entire container they are placed in. The particles in a gas are widely spaced and move freely. They are not held together by strong intermolecular forces. Their particles have high energy and move rapidly in random directions. They are highly compressible. The particles can be squeezed closer together, reducing the volume occupied by the gas. They have a lower density compared to solids and liquids. The density of a gas can vary depending on its composition and temperature. Examples of the gases are – oxygen, nitrogen, carbon dioxide, helium etc.

9. Solids, Liquids and Gases 9 Solids Liquids Gases Solids have a fixed shape and a fixed volume. Solids cannot be compressed much. Solids have high densities. They are heavy. Solids do not fill their container completely. Solids do not flow. Liquids have a fixed volume but they have no fixed shape. Like solids, liquids cannot be compressed much. Liquids have moderate to high densities, They are usually less dense than solids. Liquids do not fill their container completely. Liquids generally flow easily. Gases have neither a fixed shape nor a fixed volume. Gases can be compressed easily. Gases have very low densities. They are very, very light. A gas is much lighter than the same volume of a solid or a liquid. Gases fill their container completely. Gases flow easily.

10. Spaces between the molecules of solid, liquid and gases 10

11. References 11 ChatGPT: https://chat.openai.com/ Wikipedia: https://en.wikipedia.com Studdy.in: https://study.in/

12. Thank You