Please i need the answer im dying here ;- What happens when matter changes state? (choose one from the following :))

Its chemical properties change.
Its physical properties change.
The energy of its particles remains the same.
none of the above

If the element whose electric configuration ends in the d sublevel, the element is calssified as? a. inner transition b. noble gases c. representative d. transition

What is an example of a physical property?

What are the first two quantum numbers for the electrons located in subshell 4d? what are the first three quantum numbers for the electrons located in subshell 2s? how many electrons can be held in a sublevel l = 3? how many electrons can be held in the energy level n = 4? how many electrons in an atom can share the quantum numbers n = 4 and l = 3?