when water reacts with potassium metal the hydrogen produced ignites explosively on the surface of water ii.)write an equation to show how this ignition occurs​

Bohr's model could only explain the spectra of which type of atoms? single atoms with one electron single atoms with more than one electron bonded atoms with one electron bonded atoms with more than one electron

Gymnast always perform on padded mats. how does the mats protect the gymnast

What are transitions between a liquid and a solid called? identify which way they are transitioning