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मैटर के मात्रा के नाप के लिए कौनो इकाई होला?
कहाँ के मैटर के तीन रूप होला?
कहाँ के density में मात्रा प्रति इकाई आयतन होला?
ELEMENT के परिभाषा के अनुसार, कौनो सही होला?
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कहाँ के मिश्रण के प्रकार होला?
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फिल्ट्रेशन के माध्यम से कौनो पृथक किया जा सकता होला?
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कहाँ के पृथक के माध्यम से एक शुद्ध पदार्थ प्राप्त होला?
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कहाँ के वजन के माध्यम से किया जा सकता होला?
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कहाँ के मिश्रण के प्रकार में सारा पदार्थ समान होला?
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What is the fundamental characteristic of matter that distinguishes it from energy?
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What is the term for the smallest unit of matter that still retains the properties of an element?
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What is the process by which two or more atoms share electrons to form a new substance?
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Which of the following is an example of a compound?
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What is the term for the amount of mass per unit volume of a substance?
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What is the outermost region of an atom where electrons are found?
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What is the change in a substance from one state to another by changing its temperature and pressure?
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What are the particles that make up the nucleus of an atom?
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What is the process by which one or more substances are changed into new substances?
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What is the term for the smallest unit of a substance that still retains its properties?
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Study Notes
Matter and Its Composition
What is Matter?
- Matter is anything that has mass and occupies space.
- It can exist in three states: solid, liquid, and gas.
Characteristics of Matter:
- Mass: amount of matter in an object, measured in grams (g) or kilograms (kg).
- Weight: force exerted by gravity on an object, measured in newtons (N).
- Volume: amount of space occupied by an object, measured in cubic centimeters (cm³) or liters (L).
- Density: mass of an object per unit volume, measured in grams per cubic centimeter (g/cm³).
Composition of Matter:
- Elements: substances consisting of only one type of atom, represented by symbols (e.g., H for hydrogen).
- Compounds: substances consisting of two or more different elements, represented by formulas (e.g., H₂O for water).
- Mixtures: physical combinations of two or more substances, which can be separated by physical methods (e.g., air, soil).
Types of Mixtures:
- Homogeneous Mixtures: uniform composition throughout, like sugar dissolved in water.
- Heterogeneous Mixtures: non-uniform composition, like sand and water.
Separation of Mixtures:
- Filtration: separating solid particles from a liquid using a filter.
- Decantation: separating a liquid from a solid by pouring off the liquid.
- Distillation: separating liquids based on boiling points.
Importance of Separation of Mixtures:
- Purification: obtaining a pure substance from a mixture.
- Recycling: reusing materials by separating and processing them.
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Description
ई प्रश्नपत्र में मैटर के बारे में जानकारी दी गई है, जिसमें मैटर के गुण, प्रकार, मिश्रण और मिश्रण के पृथक्करण के बारे में बताया गया है
