Achange in the color of a solution is a sign that
a) a chemical change is taking place
b) oxygen is present
c) a physical change has just occurred
d) organic chemicals are present

Which statement correctly describes potassium iodide, ki? there is a one-to-one ratio of potassium ions to iodide ions. potassium gains electrons and iodine loses electrons during the reaction. the lattice is held together by potassium anions and iodide cations.

Word equation for k(s)+h2o(l) yield koh(aq) + h2(g)

What are fossils of organisms that existed over a wide area but only for a limited time period called?