5) We then, placed the watch glass onto the beaker so that the heat for the beaker will evaporate 
(We; placed; the watch glass; onto the beaker; so that the heat for the beaker will evaporate; T:then) (the heat for the beaker; will evaporate; )
We the heat for the beaker
placed will evaporate
the watch glass onto the beaker so that the heat for the beaker will evaporate T:then