REVERSIBLE OR IRREVERSIBLE?
Watch the video and answer to these questions: http://www.youtube.com/watch?v=tHM0UkhwfsQ Is evaporating water a reversible or irreversible change? Why? Is condensating water a reversible or irreversible change? Why? Is freezing water a reversible or irreversible change? Why? Is melting water a reversible or irreversible change? Why? Is mixing salt with water a reversible or irreversible change? Why? Is mixing cement with water a reversible or irreversible change? Why? Is burning a reversible or irreversible change? Why?
