sugar and weedkiller makes a great little bomb
Not exactly true. You first require a fertiliser (not weed killer) with a high amonium nitrate content (not available in Northern Ireland). Anything above 15% is good stuff.
You then have to boil it and let it cool. A 'scum' which crytalises around the top is the end result. You then grind the cystalised scum, the finer the better, in some industrial grinder (or a large comercial coffee grinder) and mix it with both sugar and diesal (in certain amounts obviously).
The net result is a low grade explosive called ANFO, (Amonium Nitrate Fuel Oil).
You then require a detonator (easilyishly made) and some sort of switch and battery!
Works great in an under vehicle booby trap! The low grade explosive produces an extremely effective 'ripple effect', rather than a purely 'directional' military explosive based bomb!
However:
As young soldier a friend of mine mixed mixed a bleach and toilet cleaner while cleaning the toilet floor. It was awful. It fizzed and produced extremely noxious fumes that I believe is clorine (used in World War 1 as a chemical attack agent).
Made our eyes water, hurt our airways and we had to sluice the place out with a fire hose in the end.
Why do you want to mix chemicals in the first place?