Matter

what is matter? every thing that sound rounds as is make for matter, the earth,the rocks,animals,plants,everything,we cut define matter as all that ocupies space and can be weghed, when we are studie matter we use some basic quantities suchas lenght,surface area volume,mass,densit,or temperature.   so that are all using the same units in science we use what is called the internacional sismems in unites (S.A)