Which substances exhibit only london forces ? ? he, h2o, hcl, cl2

He and Cl2

Explanation:

London forces are displayed by substances that are nonpolar such as gas molecules and nonpolar covalent bonds. H2O and HCl all contain polar covalent bonds. Hydrogen is bonded to a highly electronegative atom hence these substances exhibit hydrogen bond.Cl2 is nonpolar, same applies to He. Cl2 is a formed by a homonuclear covalent bond hence both He and Cl2 contain only London forces.

clouds form

solid ice forms on leaves.

water droplets form on grass.

the dependant variable is spilled water

the independent is the heat