Select T/F for each of the following statements regarding gold and silver:

1. Gold is the most ductile metal because it has a very low density (less mass to deform per unit volume).
2. Silver is a better conductor of electricity compared to gold.
3. Silver is a better conductor of heat compared to copper.
4. Liquid gold can be purified by bubbling oxygen gas through the molten metal, thereby reacting with other metal impurities to form oxides which are easily removed. This is fairly effective for extracting impurities other than silver and platinum, which are also fairly non-reactive with oxygen.
5. Liquid silver has extremely low solubility of oxygen.