Class 6 Exam > Class 6 Questions > A compound hasa)only one kind of mixture.b)on...
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A compound has
- a)only one kind of mixture.
- b)only one kind of element.
- c)a mixture of elements and molecules.
- d)only one kind of molecules.
Correct answer is option 'D'. Can you explain this answer?
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A compound hasa)only one kind of mixture.b)only one kind of element.c)...
A compound is a pure substance containing only one kind of molecules.
Most Upvoted Answer
A compound hasa)only one kind of mixture.b)only one kind of element.c)...
Explanation:
A compound is a substance composed of two or more different elements that are chemically bonded together in fixed proportions. In other words, a compound is made up of molecules that contain atoms of different elements.
Elements and Molecules:
An element is a pure substance that cannot be broken down into simpler substances by chemical means. Elements are made up of only one kind of atom. For example, oxygen (O), hydrogen (H), and carbon (C) are all elements.
A molecule is a group of two or more atoms held together by chemical bonds. Molecules can be made up of atoms of the same element or different elements. For example, oxygen gas (O2) is made up of two oxygen atoms, while water (H2O) is made up of two hydrogen atoms and one oxygen atom.
Types of Mixtures:
A mixture is a combination of two or more substances that are physically combined and can be separated by physical means. There are two types of mixtures:
1. Homogeneous Mixture: In a homogeneous mixture, the components are evenly distributed and cannot be easily distinguished. For example, saltwater is a homogeneous mixture because the salt and water molecules are evenly mixed throughout.
2. Heterogeneous Mixture: In a heterogeneous mixture, the components are not evenly distributed and can be easily distinguished. For example, a salad with different vegetables is a heterogeneous mixture because you can see and separate the different vegetables.
Compound Characteristics:
A compound, on the other hand, has the following characteristics:
1. Fixed Composition: A compound has a fixed composition, meaning it always contains the same elements in the same proportions. For example, water (H2O) will always have two hydrogen atoms and one oxygen atom.
2. Chemical Bonding: The elements in a compound are chemically bonded together, meaning their atoms are held together by strong chemical forces. This bonding gives compounds unique properties that are different from the elements they are made of.
3. Different Properties: Compounds have different properties than the elements they are made of. For example, sodium (Na) is a soft, silver metal, while chlorine (Cl) is a greenish-yellow gas. However, when sodium and chlorine combine to form sodium chloride (NaCl), a compound, the resulting substance is a white, crystalline solid with completely different properties.
Conclusion:
In conclusion, a compound is a substance made up of molecules that contain two or more different elements. It is not a mixture of elements and molecules, as stated in option c. Therefore, the correct answer is option D - a compound has only one kind of molecule.
A compound is a substance composed of two or more different elements that are chemically bonded together in fixed proportions. In other words, a compound is made up of molecules that contain atoms of different elements.
Elements and Molecules:
An element is a pure substance that cannot be broken down into simpler substances by chemical means. Elements are made up of only one kind of atom. For example, oxygen (O), hydrogen (H), and carbon (C) are all elements.
A molecule is a group of two or more atoms held together by chemical bonds. Molecules can be made up of atoms of the same element or different elements. For example, oxygen gas (O2) is made up of two oxygen atoms, while water (H2O) is made up of two hydrogen atoms and one oxygen atom.
Types of Mixtures:
A mixture is a combination of two or more substances that are physically combined and can be separated by physical means. There are two types of mixtures:
1. Homogeneous Mixture: In a homogeneous mixture, the components are evenly distributed and cannot be easily distinguished. For example, saltwater is a homogeneous mixture because the salt and water molecules are evenly mixed throughout.
2. Heterogeneous Mixture: In a heterogeneous mixture, the components are not evenly distributed and can be easily distinguished. For example, a salad with different vegetables is a heterogeneous mixture because you can see and separate the different vegetables.
Compound Characteristics:
A compound, on the other hand, has the following characteristics:
1. Fixed Composition: A compound has a fixed composition, meaning it always contains the same elements in the same proportions. For example, water (H2O) will always have two hydrogen atoms and one oxygen atom.
2. Chemical Bonding: The elements in a compound are chemically bonded together, meaning their atoms are held together by strong chemical forces. This bonding gives compounds unique properties that are different from the elements they are made of.
3. Different Properties: Compounds have different properties than the elements they are made of. For example, sodium (Na) is a soft, silver metal, while chlorine (Cl) is a greenish-yellow gas. However, when sodium and chlorine combine to form sodium chloride (NaCl), a compound, the resulting substance is a white, crystalline solid with completely different properties.
Conclusion:
In conclusion, a compound is a substance made up of molecules that contain two or more different elements. It is not a mixture of elements and molecules, as stated in option c. Therefore, the correct answer is option D - a compound has only one kind of molecule.
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A compound hasa)only one kind of mixture.b)only one kind of element.c)a mixture of elements and molecules.d)only one kind of molecules.Correct answer is option 'D'. Can you explain this answer?
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