Which of the following is the best indication that a chemical change has taken place?

a. The matter changes color.

b. A mixture separates into layers.

c. The change is reversible.

d. The shape of the substance changes.

Which formula represents a saturated hydrocarbon

What happen to the average kinetic energy of the remaining molecules as gaseous molecules evaporate from a liquid

According to the values found in a standard reduction potentials table, which two elements would yield the highest overall cell potential if combined in a voltaic cell?

Nonmetals such as Cl combine with metals such as Na by what

How are the physical and chemical properties of atoms represented on the periodic table of elements

Propane gas (C3H8) is combusted at a constant temperature and pressure. If 34.35L of propane react, what volume of oxygen is required? What volume of carbon dioxide is produced?

How is an organism related to a population?

The anion formed from an oxygen atom is called a (n) a. oxygen ion. c. carbon dioxide. b. oxide ion. d. nitrous oxide.

These values also increase from the bottom to the top of a group because the size of the atom decreases, resulting in a distance between the nucleus and the valence electron shell, which increases the attraction between the protons and electrons.

Given Mg (CO3) 2, CO2 and Cu3 (PO4) 2, provide the names for each of these molecules.