Electrons in their ground state when excited absorb energy and move to higher energy states. Absorption is when energy is absorbed by electrons and they move to a higher energy state Emission is when electrons release that absorbed energy and move to a lower energy state This release of energy results in emission of light from a flame The correct answer is Release energy as they move to lower energy states
Mr Johar gives daisy two solutions. He tells her to choose the best indicator to find out which solution is pH 4 and which is pH 6. Write down which indicator daisy should use. Explain your answer.
