2007-02-24 20:38:08 · 8 answers · asked by jason j 1 in Science & Mathematics ➔ Chemistry
Chemically, and by weight. Gold is a near cousin to lead, so gold is going to weigh substantially more than brass. While gold will tarnish to some degree, brass will turn green as it oxidizes.
2007-02-24 20:45:12 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Archimedes solved this one! You work out the volume of the object from the amount of water it displaces. Then you get the density from dividing the mass by the volume. Then you just look up the density of brass and gold and see witch matches. Mind you, both are alloys, so have a range of possible densities, but I suspect the ranges do not overlap as gold is so dense and it is alloyed with silver.
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2007-02-24 21:07:52 · answer #2 · answered by Alex Turner 2 · 0⤊ 0⤋
To my eye, they just look different. Or, you could take a few dozen years and the brass will turn green. Or you could use some acid and try to dissolve it. Brass will dissolve, not gold.
2007-02-24 20:42:32 · answer #3 · answered by ZORCH 6 · 0⤊ 0⤋
I think the difference is their density....
If you happen to have some samples of both, you can do the easy experiment of finding the mass and volume of each.
The formula is: density=mass/volume
The density of gold= 19 300 kg/m^3
Brass= 8400~8700 kg/m^3
But if it is actually really easy to tell by just their look... Gold looks golden....:P
2007-02-24 20:57:09 · answer #4 · answered by OrangeChocoChip 1 · 0⤊ 0⤋
Add dilute nitric acid. It won't touch gold, but brass will fizz away merrily!
2007-02-24 20:59:14 · answer #5 · answered by Gervald F 7 · 0⤊ 0⤋
the color,
the hard ness
gold is soft and a much warmer color
ad if it is ornamental or jewelery it will have markings if it is gold
brass does not
2007-02-24 20:46:12 · answer #6 · answered by Anonymous · 0⤊ 0⤋
Their densities of course!
2007-02-24 23:18:22 · answer #7 · answered by Anonymous · 0⤊ 0⤋
by their lustre or by their reacting ability
2007-02-24 20:45:27 · answer #8 · answered by anuj_5879 1 · 0⤊ 0⤋