Physical property of matter because you don't have to change its chemical make-up to tell, you can observe it using your senses and tools.
(sample g/1) X (1 mole/40.078(MW of Ca)) = moles of sample (moles of sample)(6.022 x 10^23( no of atoms)/ 1 mole) = # of atoms in a 120 g sample of calcium Avogadro's number=6.022x 10^23 atoms in 1 mole
Sorry I really don’t know I was trying to help and get points it might be D
I think Intramolecular forces are being weakened
