HOTS Science Primary 3 Diversity

Jun Jie has an object that is hard, sinks in water, and conducts electricity. Which material is the object likely made of?

A Plastic
B Ceramic
C Steel
D Wood
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Worked Solution

Step 1: Hardness is common to all except soft plastics. Step [2-9]: Sinking in water eliminates most wood and some plastics. Step [2-9]: Conducting electricity is a unique property of metals like steel.

Correct answer: Steel

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