The flakes of gold are more dense than water, therefore, it will sink to the bottom and then the water can be carefully poured out
Sodium chloride is soluble in water.
Table salt is soluble in water, gold not.
Depends on several factors, including size of the flake, overall density and the density of the medium they are in. Typical cheaper gold flakes will float in water.
a physical change
Fools gold [pyrite] does not come in flakes like slate but is randomly shaped and cannot come cleanly off in flakes.
This shouldn't be a physical change as, the gold isn't being turned from it's liquid form to it's solid form. When we filter the water for gold flakes, we are essentially taking small amounts of gold from the water and collecting them together to form a larger and more apparent amount. No state change (ie, liquid to gas. Gas to liquid. Liquid to solid.) is taking place during the process.
Panning
Depends on several factors, including size of the flake, overall density and the density of the medium they are in. Typical cheaper gold flakes will float in water.
Normally if you see golden flakes in silt they are gold. Some rivers and streams carry silt and small gold nuggets or flakes.
a physical change
Removed the gold from the dirt. The gold is heavier than dirt, so water is poured over the shovel of dirt and the water washes away the dirt leaving gold flakes.
Fools gold [pyrite] does not come in flakes like slate but is randomly shaped and cannot come cleanly off in flakes.
That depends on the purity and weight of the flakes.
Goldschlagger contains flakes of gold.
microwave at 490
Generally, 'found gold' is acquired by panning for gold flakes in mountain streams.
because there was gold flakes found in the American river
The cradle
There should not be any white flakes in bottled water. If you have white flakes in your bottle, do not drink it, throw it away and open a new bottle of water.