Author Question: A gold ring cannot sit on the surface of water, but a thin gold wire loop of the same diameter can. ... (Read 149 times)

kshipps · **on:** Aug 27, 2018

A gold ring cannot sit on the surface of water, but a thin gold wire loop of the same diameter can. Why?

A) The gold ring applies a much greater pressure against the surface of the water so that it is able to push through the surface tension.
B) The surface area of contact is the same, but the weight of the gold ring is much greater.
C) The thin gold wire is far less dense than the gold ring, which allows it to float.
D) Both A and B are true.

Question 2

Which of the following does not describe ionic compounds?

A) They have a tendency to melt easily.
B) They consist of positive and negative ions.
C) They are held together by electrostatic attraction.
D) They are usually very ordered.
E) none of the above