Why do water drops bead on a freshly waxed surface?
A) The wax, which is nonpolar, pushes the water into a bead shape.
B) The strong cohesive forces between water molecules attract each other and the result is a sphere, which is squashed down into a bead by the force of gravity.
C) Water's cohesive forces between molecules results in a spherical shape and prevents the water droplet from spreading out evenly over the wax.
D) A freshly waxed surface carries a small electrical charge, which repel the outer electrons on the water molecules.
Question 2
If you mix a typical aluminum ion (Al, atomic no. = 13 ) with a typical oxygen ion (O, atomic no. = 8 ), what compound is formed?
A) Al2O3
B) Al3O2
C) Al13O8
D) Al3O
E) Al2O2
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