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Science Bowl Question

📅 NSB Round Robin 2020🎓 MS🔄 Round 10#️⃣ Question 8❓ TOSS-UP📝 Multiple Choice

Which of the following transformations is NOT a chemical change?

W) Dissolving a salt in water
X) Vaporizing a drop of ethanol
Y) Mixing solutions of magnesium sulfate and barium nitrate
Z) Heating calcium carbonate until it expels a gas
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