| HYDROGEN | The simplest element; it combines with oxygen to make water. Each atom is made up of a single proton and a single electron. |
| PLACEBO | Put boron with oxygen to make something inactive |
| SAFETYFACTOR | One of the matches is attracting an element - it concerns Homeland Security (6,6) |
| ZINC | Metallic element - it is Zn on the periodic table (4) |
| WELLS | Sources of water, each lending life succour (5) |
| ELEMENTALLY | Basically how hydrogen combines with oxygen |
| HYDROGENATOMS | Simplest elements |
| COMBUSTION | Chemical process in which a substance reacts with oxygen to produce heat and light in the form of flame (10) |
| REGROUP | One cleaning up extra oxygen to make new order (7) |
| HADRAMAUT | Region in east-central Yemen, on the Gulf of Aden, made up of a hilly area near the coast and an inland valley occupied by a seasonal watercourse, the Wadi a¸¤aa¸Âramawt, that runs parallel to the |
| SCENE | Subdivision of an act of a play; or, a sequence of action in a film made up of a series of shots (5) |
| EMMY | This statuette of a winged woman holding an atom is the symbol of the annual awards given by the Academy of Television Arts %26 Sciences, The ... |
| SCREW | This tool is usually made up of a circular cylindrical member with a continuous helical rib, used either as a fastener or as a force and motion modifier. The Greek scientist Archimedes developed one t |
| ELMS | Related to species including the wych and the winged wahoo, tall ulmaceous trees whose wood was used to make water pumps in English villages, as well as wagon wheels and Welsh longbows (4) |
| STEEP | Half of cost to make water is going up, and that's exorbitant (5) |
| HAZE | It combines with smog to make "smaze" |
| ISOGAMETE | Reproductive cell similar to the one it combines with |
| NEWTON | First to describe gravity whose discovery that white light is made up of a mixture of colours is described in his treatise Opticks (6) |
| ETHER | Any of a class of volatile liquid compounds in which an oxygen atom is bonded to two alkyl or aryl groups, commonly used as solvents (5) |
| ATOM | Unit of matter made up of a dense nucleus surrounded by a cloud of electrons (4) |
