Answer: Gold.
Explanation: Water, CO2, and table salt are compounds. They are composed of two or more separate elements; a mixture, where as gold is neither.
The substance has a higher density than water
Higher. Because this type of heat transfer is conduction, meaning that heat always transfers to cooler objects.
Decantation is a process for the separation of mixtures of immiscible liquids or of a liquid and a solid mixture such as a suspension.
You are exposed to nuclear radiation every day is true!
