Sounds because the insteract with sliding surfaces duhhhh
It increases because the electrons are held tighter together by the higher effective nuclear charge. The electrons are held in lower energy orbitals and closer to the nucleus and more tightly bound and harder to remove from the atom.
1st row: lots - little
2nd: fast-slow
3rd: Up and down - Back and forth
D) mass of snake after feeding is equal to orginal mass of snake plus mouse since the mass is conserved
