It is exothermic and will have a negative enthalpy.
Adding hot cocoa to hot water would be a chemical change
<span>The answer is 1. Carbon dioxide has two covalent bonds amid every oxygen atom and the carbon atom. When molecules are balanced, though, the atoms pull similarly on the electrons and the control distribution is uniform. Symmetrical molecules are therefore nonpolar.</span>
P is the chemical symbol for phosphorus.
Cl is the chemical symbol for chloride, and there are three of them - the prefix for three is tri-.
Aluminum, silicon, potassium and oxygen.
