Q&A: Classification of Matter/Measurement with S.I.

Huxley · member

****This forum should be used to post questions generally pertaining to (i) how matter is classified (element, compound, or mixture), (ii) the International System of Units (S.I.), base units and unit conversion, and (iii) the introduction to the Periodic Table of Elements****

Couper · Fri Apr 15, 2005 12:01 am

I am not sure I follow the part about density in the lectures. When you speak of density volume to mass, is mass the atomic mass of the element or the # of grams?

MargaretThatcher · Fri Apr 15, 2005 5:22 am

Mass is the amount of matter. Density is the amount of matter per unit volume. 1 ton of lead has the same mass as 1 ton of feathers. 1 ton of lead would fit in a large suitcase, 1 ton of feathers would fill a large room. Lead has high density, feathers have low density.