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
Easy: reactivity
# 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.
Sugar pill, inactive drug/medicine/substance...
A liquid can also be called a fluid.
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.