Which of the following metals is obtained from its ore by heating?
A Aluminium
B. Calcium
C Iron
D. Lead
F Mercury please hlp

This chart represents the melting point of several substance. what besy explains the high melting point of the salt?

Provide a stepwise curved arrow mechanism that fully explains the outcome of the reaction shown below. oh нао* heat он

The characteristic of two different types of reactions are shown below. reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of and element. which statement is true about the atoms of the elements that participate in the two reactions? a: their identity changes in both reaction a and b. b: their identity changes in reaction a but not b. c: their identity changes in reaction b but not a. d: their identity remains the same.