Water has a density of 1000 kg/m3 by standard definition at its temperature of maximum density 3.98 Â°C and at 0% salinity. Scientists and engineers use water as a baseline for comparing the relative density of various materials. Water with a density of 1000 kg/m3 at 3.98 Â°C has a mass of 1000kg and a volume of 1 m3.
Spelt is a word. It is the past participle of spell. It is also a type of wheat, and therefore also a noun. It depends upon whether you are using British English (and Spelt is correct) or you are using American English.
Spelt is an ancient species of wheat known from genetic evidence to have originated as a hybrid of a domesticated wheat such as emmer wheat and wild goat-grass. The natural hybridization allowed the grain to be adaptable to a wider range of environmental conditions and requires fewer fertilizers.