Why cant we carry out the combustion of magnesium in a calorimeter?

The boiling point of liquids is very high what does it indicate

If the density of water is 1.0 g/cm3, which of these materials would float in water, based on their densities? check all that apply. aluminum cork iron lead wax

Place the elements below in order of decreasing ionization energy. aluminum(al) chlorine(cl) magnesium (mg) sulfur(s)