During this lab they will melt and freeze water and observe the temperatures at which these changes occur.
(they; will melt; T:During this lab) (they; freeze; water; T:During this lab) (they; observe; the temperatures at which these changes occur; T:During this lab) (the temperatures; occur; )
they they they the temperatures
will melt freeze observe occur
T:During this lab
water T:During this lab
the temperatures at which these changes occur T:During this lab