I would say that we extract from the bean much like we extract from the grain in brewing but neither is soluble. Things like antioxidants, caffeine, proteins, and tannins are extracted and with malted grains carbohydrates are broken down into sugars by the very enzymes that were created by the plant during malting.
So I mean protein will give body, roasting gives aroma/flavor but the cellulose plant cell structure is not soluble.
Only some components of the ground coffee are soluble in water..
Instant coffee is soluble in water.
Some parts of coffee dissolve in water, others don't. You can filter out the grounds after you make coffee, but you still have a solution, not just water. You can see it's coloured and can taste it's not just water. If you look on the ingredients on a jar of instant coffee, it often says 'soluble solids of pure coffee'.
Coffee powder is partially soluble in water.
Some components of coffee are soluble in hot water (and they are solutes), some components are not soluble.
When coffee is brewed, the coffee solids and the caffeine are extracted from the grounds into the water.
Order a B-52 coffee sometime. Yes, they are soluble.
Some parts of coffee dissolve in water, others don't. You can filter out the grounds after you make coffee, but you still have a solution, not just water. You can see it's coloured and can taste it's not just water. If you look on the ingredients on a jar of instant coffee, it often says 'soluble solids of pure coffee'.
Coffee grounds. Buy some coffee grounds from the store. Spray the area that the gasoline spilled in your car with some water and then rub in the coffee grounds. WAit a few hours or even a day or two and then vaccuum out the coffee grounds. and the smell should be gone!
Coffee grounds is ground coffee.
Coffee grounds are made by grinding up coffee with a coffee grinder.
Sugar. Coffee will not disolve in water (though there are some soluble components in coffee that will dissolve out of it - which is why we use it).
Morning coffee is made and processed in the coffee pot. The water gets filtered through the coffee grounds into the pot to be warmed.