HEL In a solid metal sample, how are valence electrons distributed?:
A) Valence electrons are shared among many metal ions.
B) Valence electrons are localized to each metal atom, giving it a neutral charge.
C) Valence electrons are unequally distributed, giving some metal ions positive charge and some metal ions negative charge.
D) Valence electrons are shared between neighboring metal atoms to form covalent bonds.

What are the similarities of physical and chemical change ?

Each of the following reactions is allowed to come to equilibrium and then the volume is changed as indicated. predict the effect (shift right, shift left, or no effect) of the indicated volume change. drag the appropriate items to their respective bins. co(g) + h2o(g) < => co2(g) + h2(g) (volume is decreased) pcl3(g) + cl2(g) < => pcl5(g) (volume is increased) caco3(s)< => cao(s) + co2(g) (volume is increased)

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.