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Check out our melt down furnace, it gets pretty hot!

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The Bronze Age | Educational Video for Kids

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Hello friends, welcome to a new Happy Learning video. Today we are going to learn about the last prehistoric period. Let's learn about the Bronze Age. The Bronze Age began approximately 6.500 years before Christ, when mankind started to use different types of metals instead of stones to make tools.

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Bronze is not naturally found in nature since it is combined by copper, tin, and other metals.

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physical properties and chemical properties of bronze

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physical properties and chemical properties of bronze

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Bronze is brittle and breaks easily. It has a low melting point and does not corrode easily. Bronze is generally nonmagnetic, but if iron and nickel are added, it shows magnetic properties. It is also lighter than steel.

An entire period in ancient history is devoted to the Bronze Age. This was the period when bronze was used extensively, and harder metals, such as iron, were yet to be discovered. Weapons, armor and even building materials are made of bronze.

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Bronze is a copper alloy, which means it is mostly copper mixed with another metal. Aluminum bronze has a density of 7.58 grams per cubic centimeter, while aluminum-silicon bronze has a density of 7.69 grams per cubic centimeter. One type of bronze consists of 5 percent aluminum and 95 percent copper. This bronze has a density of 8.17 grams per cubic centimeter. The density of bronze made with copper and manganese is 8.36 grams per cubic centimeter.

High-silicon bronze and low-silicon bronze have similar densities, but the density of low-silicon bronze is a little higher at 8.75 grams per cubic centimeter. The type of bronze with the highest density is phosphorus bronze, which consists of 1.25 percent phosphorus. It has a density of 8.89 grams per cubic centimeter.

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The melting point of bronze alloys vary depending on the ratio of copper to other metals. The range of melting point temperatures ranges from 1,190 to 1,675 degrees Fahrenheit. Bronze does not have a boiling point.

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Bronze is obtained by combining Copper and tin though it could be made other was like with copper and arsnic. Tin bronze is the most commonly used and easiest to bend.

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The bronze age ended (the stage where bronze was greatly used) because other metals and alloys started to be discovered that were easier to get and make.

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Industry:
Phosphor bronze is used for ships' propellers, musical instruments, and electrical contacts. Bearings are often made of bronze for its friction properties. It can be filled with oil to make the proprietary Oilite and similar material for bearings. Aluminium bronze is very hard and is used for bearings and machine tool ways.
Mirrors, medals and coins:
with coins, bronze has been used in the manufacture of various types of medals for centuries, and are known in contemporary times for being awarded for third place in sporting competitions and other events. Bronze mirrors survive from the Egyptian Middle Kingdom (2040–1750 BCE). In Europe, the Etruscans were making bronze mirrors in the sixth century BCE, and Greek and Roman mirrors followed the same pattern. Although other materials such as speculum metal had come into use, bronze mirrors were still being made in Japan in the eighteenth century AD.

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In the past bronze was used in multiple instruments like bells, cymbals, double bass, piano and the guitar. Bronzes of various metallurgical properties are widely used in struck idiophones around the world, notably bells, singing bowls, gongs, cymbals and other idiophones from Asia.

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Bronze was developed about 3500 BC by the ancient Sumerians in the Tigris-Euphrates Valley. Historians are not sure how it was discovered. The discovery of bronze enabled people to create metal objects which were harder and more durable than previously possible. Bronze tools, weapons, armor, and building materials such as decorative tiles were harder and more durable than their stone and copper predecessors. Initially, bronze was made out of copper and arsenic, forming arsenic bronze, or from naturally or artificially mixed ores of copper and arsenic, with the earliest artifacts so far known coming from the Iranian plateau in the 5th millennium BCE. It was only later that tin was used, becoming the major non-copper ingredient of bronze in the late 3rd millennium BC. Tin bronze was superior to arsenic bronze in that the alloying process could be more easily controlled, and the resulting alloy was stronger and easier to cast.

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Greek bronze helmet

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Artifact of a bowl

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Sculpture of Bronze

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Bronze is held together by a metallic bond.

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Bronze is a mixture (alloy) this means the is doesn't have a chemical formula instead it has a molecular formula which is CuSn (Copper and tin). Bronze is normally made with 88% copper and 12% tin.

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The olive brown metal we call BRONZE (now used for a copper-tin alloy) was apparently known in the Bronze Age.  A metal term from the Bronze Age with a B, R and Z ought to be considered .  If there were a metal term with a BRZ in Latin, nobody would doubt that BRONZE was merely a nasalization (extra N) of the Latin term.

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Bronze