The metric unit of measurement for weight is ?

The metric unit of measurement for weight is a gram. The metric units for weight can be summarized by the word "KHDUDCM," which stands for "king henry died unusually drinking chocolate milk." If one where to take the first letters of the words, they would have all of the units for weight (knowing some prefixes and using the word gram at the end). K is for kilo so the first one is kilogram. H is for hecto which means that it is hectogram. D is for deka so that's dekagram. U is just the unit we are using. Since we are doing weight, this is the gram. The next ones are decigram, centigram, and milligram. That means that the metric units of weight are: kilogram, hectogram, decagram, decigram, centigram, and milligram.

float.

archimedes' principle

denser than water sinks in water.

denser than mercury would sink in it