No, if H2O is separated into H2 and O, then it is not the same substance
Answer: They are arranged by atomic number.
The answer is A.Outer. Hope this helps
Answer:
A
Explanation:
Argon has 17 protons and 18 neutron
atomic number is the same as the protons number.
Answer:
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<em>no</em></h2>
Explanation:
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the particles in gas move so freely that it cannot have a definite density</em></u></h2><h2><u><em>
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moo</em></u></h2>
