{"id":4953,"date":"2025-12-19T08:41:56","date_gmt":"2025-12-18T23:41:56","guid":{"rendered":"https:\/\/agus.co.jp\/en\/?p=4953"},"modified":"2025-12-19T08:41:58","modified_gmt":"2025-12-18T23:41:58","slug":"elements-gold-lets-learn-more-about-gold-au-atomic-number-79-basic-knowledge-of-chemistry-useful-in-society","status":"publish","type":"post","link":"https:\/\/agus.co.jp\/en\/?p=4953","title":{"rendered":"Elements [Gold] Let’s learn more about Gold\/Au, atomic number 79! Basic knowledge of chemistry useful in society."},"content":{"rendered":"\n
\"\"<\/figure>\n\n\n\n

Gold is known as a luxury item.<\/p>\n\n\n\n

But did you know that it is actually quite accessible?<\/p>\n\n\n\n

You are looking at this screen right now, and there is actually gold in your sights.<\/p>\n\n\n\n

This article introduces not only the characteristics of gold, but also how it is used in society, its history and etymology.<\/p>\n\n\n\n

Trivia about gold is also introduced in this article, so please read to the end.<\/p>\n\n\n\n

<\/div>\n\n\n\n

Properties and characteristics of Gold<\/h2>\n\n\n\n
\"\"<\/figure>\n\n\n\n

Gold is a soft, golden metal.<\/p>\n\n\n\n

It has a very stretchy characteristic and 1g of gold can reach over 2000m long when stretched.<\/p>\n\n\n\n

It also has the characteristic of being able to be made thinner, so it can be used as a gold leaf.<\/p>\n\n\n\n

Gold as an element is stable and does not oxidize easily, so it is often taken as natural gold in nature as it is.<\/p>\n\n\n\n

The high-purity natural product is called \u2018gold sand\u2019 and has a history of being extracted in Hokkaido, in Japan.<\/p>\n\n\n\n

<\/div>\n\n\n\n

How Gold is used in society<\/h2>\n\n\n\n

Gold is used as an ingredient in \u2018gold medals\u2019, \u2018electronic components\u2019 and \u2018accessories\u2019.<\/p>\n\n\n\n

Let\u2019s look each of them.<\/p>\n\n\n\n

<\/div>\n\n\n\n

Gold is useful \u201cgold medal\u201d<\/h3>\n\n\n\n
\"\"<\/figure>\n\n\n\n

In fact, the gold medal is not the gold itself.<\/p>\n\n\n\n

Gold plated on silver, the material of the medal itself is the same as the silver medal.<\/p>\n\n\n\n

The reason is to \u2018reduce the burden on the host country of the Olympic Games\u2019.<\/p>\n\n\n\n

If made from pure gold, each piece would cost approximately 2 million yen.<\/p>\n\n\n\n

However, the plating is still valuable because it is covered with 6 g of \u2018pure gold\u2019.<\/p>\n\n\n\n

Incidentally, silver medals can be made at a cost of about 23,000 yen each.<\/p>\n\n\n\n

<\/div>\n\n\n\n

Gold is useful \u201celectronic components\u201d<\/h3>\n\n\n\n
\n
\"\"<\/figure>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n<\/div>\n\n\n\n

Gold conducts electricity well and is resistant to rust.<\/p>\n\n\n\n

It is therefore sometimes used as a plating to prevent rusting of electronic circuits and copper wires.<\/p>\n\n\n\n

Gold is actually used in the computers and smartphones we use on a daily basis.<\/p>\n\n\n\n

Incidentally, the gold parts of SIM cards and credit cards are also gold-plated.<\/p>\n\n\n\n

<\/div>\n\n\n\n

Gold is useful \u201caccessory\u201d<\/h3>\n\n\n\n
\"\"<\/figure>\n\n\n\n

Gold is used in many accessories.<\/p>\n\n\n\n

It has a long history and was already used as jewelry some 5,000 years ago.<\/p>\n\n\n\n

Gold is divided into different types according to purity, with K18 (18-karat gold) of 75% purity used for accessories and jewelry.<\/p>\n\n\n\n

If it’s too pure, it’s too soft and can be damaged, so we use something a little less pure gold.<\/p>\n\n\n\n

Incidentally, those that are at least 99.9% pure gold are labelled K24.<\/p>\n\n\n\n

<\/div>\n\n\n\n

History of gold<\/h2>\n\n\n\n
\"\"<\/figure>\n\n\n\n

\u30fbChemical symbol; Au<\/p>\n\n\n\n

The etymology of the word gold as an element is \u2018shining\u2019.<\/p>\n\n\n\n

Au is derived from the Latin word \u2018aurum\u2019 meaning \u2018shining one\u2019 and gold from the Sanskrit word \u2018ghel\u2019 meaning \u2018shining\u2019.<\/p>\n\n\n\n

The discovery of gold as an element has been known for a long time and the discoverer is unknown.<\/p>\n\n\n\n

The American James Marshall is credited with the discovery of gold sand.<\/p>\n\n\n\n

<\/div>\n\n\n\n

Summary<\/h2>\n\n\n\n

In this article, we have explained ‘ gold ‘.The key points of this article are as follows.<\/p>\n\n\n\n

\n