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.
Easy: reactivity
incense
# a packet is another name for ceal or plastic wrapping holding a substance
Fermentation is the chemical breakdown of a substance through the use of bacteria or yeast. Another word for fermentation is leavening.
A medium.
A liquid can also be called a fluid.
Sugar pill, inactive drug/medicine/substance...
Another word for pollen is dander. Pollen is a powder substance that is produced by flowers. It can be spread from flower to flower by the wind or insects.
An electrolyte is a substance that ionizes when it is dissolved in ionizing solvents such as water. Another word for electrolyte would be ions.