The activation energy of an endothermic reaction -
O must be less than the required AH
O is not needed for the required AH
must be greater than the required AH
must be equal to the required AH

Describing intermolecular forces use the drop down menus to match the type of intermolecular force to its name dipole dipole interactions dipole induced dipole interactions london dispersion forces hydrogen bond van der waals forces done

Amap that uses a range of colors and shading to represent the elevation, depth, or landscape of specific features on earth is a/an map.

Areaction in which products can react to re-form reactants is