true
true
True. The unit for the atomic weights of chemical elements is the relative atomic mass unit (1/12 from the atomic mass of the isotope 12C). Note that atomic weights is used for elements and atomic mass for isotopes.
false
False! They come from the Tropics!
Temperature is measured in celcius.Heat is measured in joules.
false
It is False.
False, it is measured from crest to crest.
Yes, true: the mass of 1 proton is exactly the same as of 1 neutron: 1 a.m.u.
FALSE
no
True.