You set up an experiment on a mass scale. You place a piece of metal in a salt solution, then the chemical reaction you observe starts bubbling
violently. The scale reads a loss of mass afterwards - explain whether or not
the law of conservation of mass is violated. *

metric time was an attempt to create a standard unit of time based off of 10, but it never took off an is not included in the metric system (si)

the correct answer would be b. amelia, because the particals of gas move really fast (charged particals) and gas also has a lot of room (particals move independently) so the only answer that has both of those is amelia's.

chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. these processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. understanding chemical changes is a major part of the science of chemistry.