if we continue heating a piece of initially room-temperature metal in a dark room, what will be its first visible color?

In which situation can a mixture always be called a solution

40dm3 of gas at 760 torr are heated from 5°c to 50°c what is the new volume

The comparison of the number of atoms in a copper coin the size of a penny with the number of people on earth is made to illustrate which of the following? a. that atoms are indivisible b. that atoms are very small c. that atoms are very large d. that in a copper penny, there is one atom for every person on earth