An alkene reacts with a strong protic acid to form a carbocation. however, an alkene will react with a halogen electrophile to form a cyclic intermediate. draw the curved arrow notation for both reactions.

What are the options? physical property can be color, smell, opacity, viscosity, density, infra red spectrum, melting and boiling points, attraction and repulson to magnets, etc.

It would be true sodium reacts with water in a violent way 

Ithink chemical bonding

In reversible reaction chemistry equilibrium is attained when the forward and reverse reactions are taking place at the same rate, thus, the concentrations of reactants and products remain the same. a reversible reaction is a chemical reaction where the reactants form products that, in turn, react together to give the reactants back. in irreversible reactions on the other hand, the reactants react to form the products, which cannot revert back into reactants.