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Consider the following statements.
- Normally, when water freezes, it crystallizes and its molecules are arranged into hexagonal solid structure called ice.
- Ice is denser than water.
- Amorphous ice lacks long-range order in its molecular arrangement.
How many of the above statements is/are correct?
- a)Only one
- b)Only two
- c)All three
- d)None
Correct answer is option 'B'. Can you explain this answer?
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Most Upvoted Answer
Consider the following statements. Normally, when water freezes, it cr...
Statement 2 is incorrect.
- Normally, when water freezes, it crystallizes and its molecules are arranged into the familiar hexagonal, solid structure that we call ice. Ice is less dense than its liquid form — an unusual property for a crystal. Depending on conditions such as pressure and the speed of freezing, water can also solidify in any of two dozen other regular arrangements. Amorphous ice is different: it has no such order.
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Consider the following statements. Normally, when water freezes, it cr...
Statement 1: Normally, when water freezes, it crystallizes and its molecules are arranged into hexagonal solid structure called ice.
This statement is true. When water freezes, its molecules form a regular and repeating pattern, resulting in a crystalline structure. This structure is known as ice, and it is composed of hexagonal layers of water molecules.
Statement 2: Ice is denser than water.
This statement is false. Unlike most substances, water is an exception to the general rule that substances become denser when they freeze. When water freezes, it expands and its density decreases. This is because the hydrogen bonds between water molecules form a more open and less tightly packed structure in ice compared to the liquid water. As a result, ice is less dense than liquid water, which is why ice floats on water.
Statement 3: Amorphous ice lacks long-range order in its molecular arrangement.
This statement is true. Amorphous ice is a form of ice that lacks a well-defined crystal structure. Unlike regular ice, which has a repeating hexagonal arrangement of water molecules, amorphous ice has a disordered and random arrangement of molecules. It does not have long-range order, meaning that there is no consistent pattern or structure throughout the entire material. The lack of long-range order gives amorphous ice its "amorphous" or non-crystalline nature.
Conclusion:
Based on the analysis of the statements:
- Only statement 1 is correct.
- Statement 2 is incorrect as ice is less dense than water.
- Statement 3 is correct as amorphous ice lacks long-range order in its molecular arrangement.
Therefore, the correct answer is option B - Only two of the statements are correct.
This statement is true. When water freezes, its molecules form a regular and repeating pattern, resulting in a crystalline structure. This structure is known as ice, and it is composed of hexagonal layers of water molecules.
Statement 2: Ice is denser than water.
This statement is false. Unlike most substances, water is an exception to the general rule that substances become denser when they freeze. When water freezes, it expands and its density decreases. This is because the hydrogen bonds between water molecules form a more open and less tightly packed structure in ice compared to the liquid water. As a result, ice is less dense than liquid water, which is why ice floats on water.
Statement 3: Amorphous ice lacks long-range order in its molecular arrangement.
This statement is true. Amorphous ice is a form of ice that lacks a well-defined crystal structure. Unlike regular ice, which has a repeating hexagonal arrangement of water molecules, amorphous ice has a disordered and random arrangement of molecules. It does not have long-range order, meaning that there is no consistent pattern or structure throughout the entire material. The lack of long-range order gives amorphous ice its "amorphous" or non-crystalline nature.
Conclusion:
Based on the analysis of the statements:
- Only statement 1 is correct.
- Statement 2 is incorrect as ice is less dense than water.
- Statement 3 is correct as amorphous ice lacks long-range order in its molecular arrangement.
Therefore, the correct answer is option B - Only two of the statements are correct.
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Consider the following statements. Normally, when water freezes, it crystallizes and its molecules are arranged into hexagonal solid structure called ice. Ice is denser than water. Amorphous ice lacks long-range order in its molecular arrangement.How many of the above statements is/are correct?a)Only oneb)Only twoc)All threed)NoneCorrect answer is option 'B'. Can you explain this answer?
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