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Science Bowl Question

📅 NSB Middle School 2009🎓 MS🔄 Round 3#️⃣ Question 15🌟 BONUS📝 Multiple Choice

Which of the following is NOT true:

W) compounds have atoms from more than one element
X) atoms can bond together to make molecules
Y) all helium atoms have one more proton than all hydrogen atoms
Z) all oxygen molecules have 8 neutrons
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