Fluorine - 18.998 u
chromium - 51.996 u
tellurium - 127.6 u
dysprosium - 162.5 u
<span> If the temperature of the liquid is increased, then more sugar will dissolve, because warm solutions hold more solute than cold solutions.</span>
Red has the longest wavelength
Building a tower out of magnetic blocks and water vapor condensing on a bathroom mirror are only physical changes.
A physical change is easily reversible. It does not involve a change in the composition of a substance.
A tower built out of magnetic blocks can easily be pulled apart and water that condensed on a bathroom mirror can easily change back to vapour by heating.
All these are possible because the both processes are only physical changes.
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Explanation:
Definition
Na (sodium) Sodium
Ne (neon) 20.180 u (atomic mass
N (nitrogen) 7 atomic number