Answer to Question #56711 in Organic Chemistry for higo

Question #56711
what must occur for a change to be a chemical reaction? A chemical change occurs when a piece of word -a light is produced when an electron moves from one energy level and? a. jump to higher energy level b. falls to a lower energy level c. moves into the nuclear d. moves to another position in the same sublevel -the least penetrating from of radiation is? a. beta radiation b.gamma radiation c. alpha radiation d. x-rays -all of the following are physical of matter except ? a. mass b.ability to rust c.melting point d. color -which of the following is a physical change? freezing ability to rust rusting burning -which of the following is a chemical property? color ability to burn freezing point hardness -for an electron in an atom to change from the ground state to an exited state energy must be released energy must be absorbed radiation must be emitted the electron must make a transition from higher to a lower energy level
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