Which two major parts of the Earth system does this photo most clearly show?
A. Geosphere
B. Atmosphere
C. Biosphere
D. Cryosphere

The characteristics 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 an element. which statement is true about the atoms of the elements that participate in the two reactions? their identity changes in both reaction a and reaction b. their identity changes in reaction a but not in reaction b. their identity changes in reaction b but not in reaction a. their identity remains the same in both reaction a and reaction b.

The empirical formula of a compound is ch2o and its mass is 120 amu/molecule, what is its formula?

Arrange the elements in order of increasing electronegativity. use the periodic table to you arrange the elements. p o k mg