It really depends on how you are using the word 'substance'. Check out this site and maybe you can come up with some ideas.
http://thesaurus.reference.com/browse/substance
Good Luck!!
Malignant substance
Liquid? maybe?
The word for that substance is SOLUTE. The term "soluble" describes the action, but is not the term used for the substance.
incense
Transmutation.
Easy: reactivity
# a packet is another name for ceal or plastic wrapping holding a substance
Ionic compund
A medium.
Fermentation is the chemical breakdown of a substance through the use of bacteria or yeast. Another word for fermentation is leavening.
An electrolyte is a substance that ionizes when it is dissolved in ionizing solvents such as water. Another word for electrolyte would be ions.
A liquid can also be called a fluid.