Question

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5 why does rita describe the properties of elements that make up a compound? a to explain that the properties of elements remain unchanged after becoming a compound b to demonstrate how the properties of elements change after becoming a compound c to warn about how explosive elements become when heated to form compounds

Explanation:

• Option A is incorrect because when elements form a compound, their properties change (e.g., hydrogen and oxygen are gases, but water - their compound - is a liquid with different properties).
• Option B is correct. By describing the properties of the elements in a compound, Rita can show the difference between the elements' original properties and the compound's properties, thus demonstrating how the elements' properties change when they form a compound.
• Option C is incorrect as the question is about the general properties of elements in compounds, not about explosive behavior upon heating.

Answer:

B. To demonstrate how the properties of elements change after becoming a compound