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Gold is a chemical element; it has symbol Au (from Latin aurum) and atomic number 79. In its pure form, it is a bright, slightly orange-yellow, dense, soft, malleable, and ductile metal. Chemically, gold is a transition metal, a group 11 element, and one of the noble metals.
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Gold is best-known for its rich, warm yellow hue. But commonly gold's colour ranges from deep yellow to reddish or even white, depending on its purity and alloy composition. This captivating colour, along with its inherent lustre, gives gold its unmistakable visual appeal.
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The most obvious physical property of gold is its color. It is one of just a few minerals whose names are used frequently in common language as the name of a color. The color is not altered by tarnish or the development of an oxidized surface. However, the …
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Gold, a dense lustrous yellow precious metal and a chemical element of Group 11. Gold is attractive in color and brightness, durable to the point of virtual indestructibility, highly malleable, and usually found in nature in a comparatively pure form.
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Gold has been prized since prehistoric times. Get the facts on gold's chemical and physical properties, and what makes the element so resilient.
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Physical properties: Gold is a soft, yellow metal with a bright metallic luster. It is one of the least reactive chemical elements and does not tarnish or corrode. Gold has a high melting and boiling point, and is a good conductor of electricity and heat.
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Just 1g of gold (the size of a grain of rice) can be beaten into a thin film covering 1 square metre. Gold is also extremely ductile (something is ductile when it is capable of being drawn out as a wire under tension without breaking). Pure gold is also a very soft metal.
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Gold is one of the densest of all metals. It is a good conductor of heat and electricity. It is also soft and the most malleable and ductile of the elements; an ounce (31.1 grams; gold is weighed in troy ounces) can be beaten out to 187 square feet (about 17 square metres) in extremely thin sheets called gold leaf.
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Pure gold is 24 karat. 18 karat is 75% and 12 karat is 50% pure gold. Gold is the most malleable of all metals and soft enough to be cut with a knife. Stone age peoples hammered gold into plates for ornamental purposes.
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Gold is a Soft Yellowish Metal with Atomic Number 79. It is a Very Malleable and Ductile Metal. Learn about the Important Physical and Chemical Properties of Gold and its Uses.
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