Maya Ellison
Gold and plastic are two very different substances, with gold being a dense metal and plastic being a lightweight polymer. Gold has a density of approximately 19.3 grams per cubic centimeter, while plastic generally has a lower density, depending on the type. Due to its high density, gold is a heavy substance, and even a small amount of it can feel weighty. However, pure gold is often too heavy for everyday wear, so it is usually mixed with alloys to lighten it up. Interestingly, researchers have recently created a new form of gold by mixing it with plastic, resulting in a material that is much lighter while still retaining its purity. Therefore, when comparing the weight of gold and plastic, it depends on whether we are considering pure gold or gold mixed with other substances.
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What You'll Learn
Gold is denser than plastic
Gold's high density means that it is a preferred choice for investors looking to buy gold. Its density also makes it ideal for industrial applications such as radiation shielding and aerospace engineering, where its weight and durability are essential.
Gold is often lightened with alloys to make it more suitable for everyday wear. Researchers at ETH Zurich have created a new form of gold by mixing it with plastic instead of other metals, resulting in a material with one-tenth the weight of pure gold while retaining the same purity. This lightweight gold is made by combining gold nanoplatelets, polymer latex, fibres, water, and salt to create a gel. The water is then replaced with alcohol, and the mixture is placed in a pressure chamber full of CO2, turning it into a light aerogel.
While gold is denser than plastic, there are other metals that are denser than gold, such as platinum and lead. Gold's density is approximately 19.3 grams per cubic centimetre, while lead has a higher density and weighs more for the same volume.
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Platinum is denser than gold
The density of a substance is defined as the ratio of its mass to its volume. Scientifically, this is referred to as the "unit mass per unit volume" and is typically measured in grams per cubic centimeter (g/cm³). Density is also sometimes known as "specific gravity," which is the ratio of density to water. Platinum's high specific gravity of 21.4 means that it is more than 20 times denser than water.
The distinction between platinum and gold in terms of weight is notable, given that both metals are highly regarded and possess unique properties and value. Platinum, with its higher density, is a more compact and weighty option for jewelry and other materials. For example, a platinum ornament or piece of jewelry will be heavier than a gold one of identical dimensions, which can influence its value.
Gold, despite having a high density compared to other metals, is often lightened with alloys to make it more suitable for everyday wear. Researchers have also created a new form of gold by mixing it with plastic, resulting in a material that is one-fifth to one-tenth the weight of traditional gold while retaining its purity. This lightweight gold combines tiny gold platelets with polymer latex, fibers, water, and salt to create a gel that is then converted into an aerogel.
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Gold is heavier than diamond
Gold is a well-known and highly valued precious metal. It is often used in jewellery, electronics, and other industries. One of the key characteristics of gold is its weight, which is influenced by its high density. Gold has a density of approximately 19.3 grams per cubic centimeter, which means that a significant amount of mass is packed into a small volume. This high density gives gold a substantial and heavy feel, making it a preferred choice for investors and collectors.
However, it is important to note that gold's weight can be altered. Pure gold, for example, would be too heavy for everyday wear as jewellery, so it is often mixed with alloys to lighten its weight. Researchers at ETH Zurich have created a new form of gold by mixing it with plastic, resulting in a material that is one-tenth the weight of traditional gold while maintaining its purity. This lightweight gold is made by combining gold nanoplatelets with polymer latex, protein fibres, water, and salt to create a gel. The water is then replaced with alcohol, and the mixture is subjected to high pressure and temperature to create a light aerogel.
Despite its high value and allure, gold is not the heaviest substance. Platinum, for example, is denser and heavier than gold. Similarly, lead is denser and heavier, and aluminium is also denser than gold.
When comparing gold to diamonds, gold is the heavier of the two substances. Diamonds have a density of around 3.5 grams per cubic centimeter, which is significantly lower than the density of gold. Therefore, when comparing equal volumes of gold and diamonds, the gold will be heavier due to its higher density.
While gold is heavier than diamonds, diamonds possess their own irresistible allure. Diamonds are renowned for their brilliance, fire, and sparkle, resulting from their ability to refract light in captivating patterns. An expertly cut diamond can create beautiful rainbow-shimmering displays that capture the hearts of many. So, while gold may have the upper hand in terms of weight, diamonds offer a unique splendour and brilliance that transcends density alone.
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Gold is mixed with plastic to reduce weight
Gold is a well-known precious metal used in a variety of industries, from jewelry to electronics. However, pure gold is often too heavy for everyday wear, especially in jewelry. To address this issue, researchers at ETH Zurich have developed an innovative solution by mixing gold with plastic instead of other metals. This process results in a new form of gold that is significantly lighter while maintaining its purity.
Traditionally, gold is lightened by mixing it with metal alloys, such as copper, which reduces its purity. For example, 24-karat gold is pure gold, but when mixed with copper, it becomes 18-karat gold with 75% gold and 25% copper. This alloy has a density of about 15 grams per cubic centimeter. However, this mixture still has a substantial weight that may be undesirable for certain applications.
To create lightweight plastic gold, researchers combine tiny gold platelets, polymer latex, protein fibers, water, and salt to form a gel. The water is then replaced with alcohol, and the mixture is placed in a pressure chamber full of CO2. This process turns the golden gel into a lightweight aerogel. The gold can be heated and shaped at a much lower temperature than pure gold, making it easier to work with.
The resulting plastic gold has a density of around 1.7 grams per cubic centimeter, which is about one-tenth of the density of traditional 18-karat gold. This lightweight gold retains the purity of 24-karat gold while being much more practical for jewelry and everyday use. It also opens up possibilities in various fields such as chemistry, electronics, and radiation shielding, where its reduced weight and density can be advantageous.
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Gold is a dense metal
The density of gold is due to the close packing of its atoms in a crystal lattice structure. Gold's high density has several implications and applications. For example, gold is a preferred choice for investors due to its weight and perceived value. Additionally, gold's density contributes to its robustness, making it suitable for specialised applications such as radiation shielding and aerospace engineering.
While gold is dense, it is not the densest metal. Some platinum group metals, such as ruthenium and osmium, have higher densities. Additionally, gold's density can be altered by alloying it with other metals or materials. For example, researchers at ETH Zurich have created a new form of gold by mixing it with plastic, resulting in a material with one-tenth the density of pure gold while retaining its purity.
Gold's density also varies with temperature. As metals are heated, they expand, and their density decreases. Gold's density at just below its melting point of 1064°C is 18.31 grams per cubic centimetre, and it further decreases to 17.19 grams per cubic centimetre when molten. This density variation during the phase change from solid to liquid gold results in a reduction in volume, which can be observed in the formation of shrinkage depressions or cracks on cast gold bars.
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Frequently asked questions
Gold is heavier than plastic. Density is a critical factor in determining the weight of materials. Gold has a density of approximately 19.3 grams per cubic centimeter, while plastic generally has a lower density, depending on the type.
Gold is a very dense metal, with a density of about 19.32 grams per cubic centimeter. This means that a large amount of mass is packed into a small volume, making it heavy for its size.
Yes, researchers at ETH Zurich have created a new form of gold by mixing it with plastic instead of other metals. This lightweight gold has one-tenth the weight of pure gold while retaining the same purity.
