Answer:
The mass number of the atom is equal to the sum of the number of protons and neutrons in the nucleus
Explanation:
Each proton and each neutron weigh one amu( atomic mass unit), adding together the neutrons and protons and multiplying by 1 amu you get the mass of an atom
Google has lots of answers for ex; Me and a bunch of friends climbed the dune fence as we were tryna escape.
I believe your answers are B, tastes bitter, and D, slippery feel. An example would be a bar of soap.