You heat up two substances, A and B. Both substances change color. When cooled, both substances return to their original colors. What most likely happened in this situation? A. A chemical change occurred in Substance A, and a physical change occurred in substance B. B. A physical change occurred in substance A, and a chemical change occurred in Substance B. C. A chemical change occurred in both substances. D. A physical change occurred in both substances.

Nonmetal halogen family atmoic mass 35

What is the value of keq for the reaction expressed in scientific notation?

According to the valence shell electron pair repulsion (vsepr) theory, a molecule that has four electron groups around the central atom will exhibit what electron geometry? view available hint(s) according to the valence shell electron pair repulsion (vsepr) theory, a molecule that has four electron groups around the central atom will exhibit what electron geometry? trigonal bipyramidal tetrahedral square planar determination of electron geometry requires information on whether the electron groups are lone pairs or bonding groups.