Which of the following is not a clue for a chemical change ? A)leaves of the tree changing color
B) rusting of iron
C) fermentation of milk
D) Melting of ice

One significant difference between an ionic bond, where electrons are taken from one atom and added to another atom, and a covalent or metallic bond, where electrons are shared is

What will most likely happen when two bromine atoms bond together?

The half-life of a certain element is 100 days. how many half-lives will it be before only one eighth of this elementremains?