Back
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

gold

Primary Information
Secondary Information

Definition

Gold is a chemical element with the symbol Au and atomic number 79. It is a bright, slightly reddish yellow, dense, soft, malleable, and ductile metal. Chemically, gold is a transition metal and a member of the platinum group. It is one of the least reactive chemical elements and is solid under standard conditions. Gold is the most malleable and ductile metal, and is a good conductor of electricity and heat.

Gold is found in the Earth's crust in trace amounts. It is most commonly found in association with quartz veins, but it can also be found in placer deposits. Gold is mined by a variety of methods, including open-pit mining, underground mining, and placer mining.

Gold is a valuable metal and has been used for jewellery and currency for centuries. It is also used in electronics and dentistry. Gold is a very rare metal and its supply is limited. This makes it a valuable investment.

How can the word be used?

The gold statue was a priceless work of art.

gold

Different forms of the word

Noun: gold.

Adjective: golden.

Verb: to gild.

Synonym: yellow metal.

Etymology

The word "gold" comes from the Old English word "gold", which is derived from the Proto-Germanic word "gulþa". The Proto-Germanic word is thought to be related to the Old Irish word "gúal" and the Old Norse word "gull". All of these words mean "gold".

Question

What can gold be used for?

AQA Science Exam Question and Answer

Question:

What is gold and what are its properties?

Answer:

Gold is a chemical element with the symbol Au and atomic number 79. It is a dense, soft, shiny, malleable and ductile metal with the highest electrical conductivity, thermal conductivity, and reflectivity of any metal. The metal is found in the Earth's crust in the form of nuggets or grains and as flakes in placer deposits. It is most often extracted by mining and processing ores containing gold.

Gold is a very valuable metal because it is rare, malleable, ductile, and has a high melting point. It is also resistant to corrosion and tarnishing. Gold is used in jewellery, coins, and other decorative objects. It is also used in electronics and dentistry.

Here are some additional points that could be included in the answer:

  • Gold is the most malleable and ductile metal, meaning that it can be hammered into very thin sheets or drawn into very fine wires.
  • Gold is the most reflective metal, reflecting about 95% of light that hits it.
  • Gold is a good conductor of heat and electricity.
  • Gold is resistant to corrosion and tarnishing.
  • Gold is a rare metal, making it valuable.
  • Gold is used in jewellery, coins, and other decorative objects.
  • Gold is also used in electronics and dentistry.