QQuestionChemistry
QuestionChemistry
Is ice melting a chemical change or a physical change? Explain.
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Answer
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Step 1:I'll solve this problem step by step, explaining the nature of ice melting:
Step 2:: Understand the Definitions
Physical changes are transformations that do not create new chemical substances. In a physical change, the molecular composition remains the same, but the physical state or appearance may change. Chemical changes involve the formation of new chemical substances with different molecular compositions and properties.
Step 3:: Analyze the Process of Ice Melting
- The chemical composition remains $$H_{2}O$$ (water molecules)
When ice melts, water changes from a solid state to a liquid state. Let's examine the key characteristics: - Only the physical state changes (from solid to liquid) - No new chemical substances are created - The molecular structure remains unchanged - The change is reversible (liquid water can freeze back to ice)
Step 4:: Determine the Change Type
- The molecular composition remains $$H_{2}O
Based on the analysis, ice melting is a PHYSICAL CHANGE because: - No new chemical substances are formed - Only the physical state changes - The change is easily reversible through temperature modification
Final Answer
The water molecules maintain their original chemical composition throughout the transformation, with only the physical state being altered.
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