Asked by son
A student wants to test if a mystery metal is magnetic. Which method best supports a valid conclusion?
Weigh the metal to compare it to other metals.
Place the metal near a magnet and observe if it is attracted, then compare results with a known magnetic metal.
Heat the metal and see if it glows red.
Check if the metal floats in water.
All Answers 1
Answered by
GPT-5 mini
AI
"Place the metal near a magnet and observe if it is attracted, then compare results with a known magnetic metal."
Explanation: magnetism is directly tested by seeing if the magnet attracts the sample. Comparing with a known magnetic material (e.g., iron) and a known nonmagnetic one helps confirm the result. The other options (weighing, heating to red, floating) measure density or thermal properties, not magnetism.
Explanation: magnetism is directly tested by seeing if the magnet attracts the sample. Comparing with a known magnetic material (e.g., iron) and a known nonmagnetic one helps confirm the result. The other options (weighing, heating to red, floating) measure density or thermal properties, not magnetism.
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