Matter In Our Surroundings

Matter is anything that has mass and occupies space. It is present in three states- solid, liquid, and gas. The chapter "Matter in Our Surroundings" deals with the physical nature of matter and the various states in which matter can exist.

Properties of Matter

Matter has various properties such as mass, volume, density, and so on. These properties help us to distinguish one type of matter from another. For example, the density of water is higher than that of air, which makes it possible for objects to float on water.

States of Matter

Matter exists in three states- solid, liquid, and gas. The state of matter depends on the amount of energy that the particles of matter possess. In solid, the particles are closely packed and have the least amount of energy. In liquid, the particles are close together but have more energy than the particles in a solid. In gas, the particles are widely spread and have the highest amount of energy.

Changes in State of Matter

Matter can change its state from one form to another by adding or removing energy. For example, when ice is heated, it melts and turns into water. This change in state is called melting. Similarly, when water is heated, it turns into steam, which is a gas. This change in state is called vaporization.

Conclusion

In conclusion, the chapter "Matter in Our Surroundings" deals with the physical nature of matter and the various states in which it exists. It is important to understand the properties of matter and the changes in state that it can undergo. This knowledge is useful in various fields such as chemistry, physics, and engineering.

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