"But g and kg continue to stupify me since I can't seem to find a useful frame of reference for those measures" actually 1kg is 1000 cm3 of water (1 cm3 for a

"But g and kg continue to stupify me since I can't seem to find a useful frame of reference for those measures" actually 1kg is 1000 cm3 of water (1 cm3 for a gram). The idea behind that was purely scientific, not pragmatic.