It is not not correct that one pund of pure cotton weighs over one pound of pure gold because pounds is a measurement of wight. However, a measurement of mass, like grams, could make it seem like this because mass is often confused with weight. Weight would be different on another planet because the gravity is pulling you down more. However, mass, a measure of desity and inertia, would stay the same.
A pound of cotton is heavier than a pound of gold as the pure cotton is weighed by avoirdupois pound. That consists of 16 ounces. whereas gold being a metal is weighed by troy pound. Its equivalent to 12 ounces.
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The statement "1 pound of pure cotton is heavier than 1 pound of gold" is incorrect because 1 pound is always equal to 1 pound, regardless of the material it is measuring. The difference lies in the density of the materials - gold is denser than cotton, so a pound of gold takes up less physical space compared to a pound of cotton.
Real gold is heavier than fake gold because real gold has a higher density due to its composition of pure gold or gold alloy, while fake gold is typically made of a lighter metal with a gold coating.
No, gold is an element, not a compound. It is a pure substance made up of only gold atoms.
Yes, salt water is denser than pure water due to the presence of dissolved salts. The added weight of these salts increases the density of the water, making it heavier.
Gold itself is an element. All of the gold you are likely to see (rings, watches, plating, etc.) is an alloy (mixture) of gold and other metals. Even "pure gold" jewellery (24 k) is only +99.9% pure
Gold is a pure substance