There are two possible answers to your question. The process in which food is broken down into smaller, soluble substances is digestion. However I think you might be after the type of chemical reaction involved in digestion, which is hydrolysis. Hydrolysis is the breakdown of a larger molecule into smaller molecules by reacting with water. So, for example, maltose is broken down into glucose by hydrolysis reactions, and proteins are broken down into amino acids by hydrolysis reactions. See http://www.biotopics.co.uk/as/disaccharidehydrolysis.html for a simple animation of the hydrolysis of maltose.
Resperation
No. but the process of metabolism creates water.
Water can be broken down by the chemical process called electrolysis. An electrical current is passed through water with an electrolyte added to it. The electrical current breaks down the water into hydrogen and oxygen gas that bubble up from the electrodes in the water.
When wind or water wear away a rock, the process is called "erosion".
New icebergs float on sea water and are broken away from the ice floe in a process called calving. The iceberg calvesoff the floe.
digestion
digestion
decompose hydrolysis
This process is called hydrolysis.
Resperation
it is called an erosion
When separated into its component parts, hydrogen and oxygen, the original water no longer exists.
No. but the process of metabolism creates water.
Water can be broken down by the chemical process called electrolysis. An electrical current is passed through water with an electrolyte added to it. The electrical current breaks down the water into hydrogen and oxygen gas that bubble up from the electrodes in the water.
When rocks get broken down by wind, water, ice or heat it's called weathering. Weathering is the process that occurs before erosion where the rock is broken down even further.
When wind or water wear away a rock, the process is called "erosion".
water is broken is to O2. The process is known as photolysis