Which process results in a chemical change?
a) tearing tin foil
b) melting an iron bar
c) crushing an aluminum can
d) burning magnesium ribbon

What is a possible quantum number set for an electron in the 3s orbital of a magnesium atom

Which is an example of the practical pursuit of alchemy? a. forming perfect substances. b. transforming base metals. c. developing metalworking techniques. d. linking spiritual characteristics with material substances.

The diagin dilutepage 6 of 12a6a5(a)fluorine, chlorine, bromine and iodine are placed in the same group of theperiodic table.state the common name used to describe elements in this group.(i)state the group in which the elements are placed and explain whythey are placed in that group.(ii)which of the above named elements is a solid at roomtemperature and pressure?