Magnesium v. Copper



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Magnesium v. Copper

Magnesium v. Copper

Why is it useful to know the characteristics of different elements?

Magnesium

The free element magnesium is not found naturally on Earth, as it is highly reactive, which means its pure form will quickly react and combine with other things when it gets the chance. In order to get pure magnesium, we can take minerals mined from the earth, such as magnesite (MgCO3) and get the magnesium out of it. This requires a chemical reaction. It can also be gotten from magnesium salts, which are in salt watr.

Pure magnesium burns with a characteristic brilliant-white light, making it a useful ingredient in flares. In commerce, the chief use for the metal is as an alloying agent to make aluminium-magnesium alloys, sometimes called magnalium or magnelium. Since magnesium is less dense than aluminium, these alloys are prized for their relative lightness and strength.

**alloy: mixture of two metal elements **

The use of magnesium in the commercial aerospace industry was generally restricted to engine-related components, due either to perceived hazards with magnesium parts in the event of fire or to corrosion. Currently, the use of magnesium alloys in aerospace is increasing, mostly driven by the increasing importance of fuel economy and the need to reduce weight.



1. Why is magnesium added to aluminum to make beverage cans?

2. Although magnesium is strong and light-weight, give two reasons why it is used only in the engines of aircraft and not in the body.
Copper

Despite competition from other materials, copper remains the preferred electrical conductor in nearly all categories of electrical wiring with the major exception being overhead electric power transmission where aluminium is often preferred. Copper wire is used in power generation, power transmission, power distribution, telecommunications, electronics circuitry, and countless types of electrical equipment. Electrical wiring is the most important market for the copper industry. This includes building wire, communications cable, power distribution cable, appliance wire, automotive wire and cable, and magnet wire. Roughly half of all copper mined is used to manufacture electrical wire and cable conductors. Many electrical devices rely on copper wiring because of its multitude of inherent beneficial properties, such as its high electrical conductivity, tensile strength, ductility, creep (deformation) resistance, corrosion resistance, low thermal expansion, high thermal conductivity, solderability, and ease of installation.



3. Why do you think that aluminum is preferred over copper for overhead powerlines?

4. Copper is an excellent choice for use in electronics. Why is magnesium becoming more widely used in small electronics such as phones, tablets and cameras?


Why is it useful to know the characteristics of different elements?

Magnesium

The free element magnesium is not found naturally on Earth, as it is highly reactive, which means its pure form will quickly react and combine with other things when it gets the chance. In order to get pure magnesium, we can take minerals mined from the earth, such as magnesite (MgCO3) and get the magnesium out of it. This requires a chemical reaction. It can also be gotten from magnesium salts, which are in salt watr.

Pure magnesium burns with a characteristic brilliant-white light, making it a useful ingredient in flares. In commerce, the chief use for the metal is as an alloying agent to make aluminium-magnesium alloys, sometimes called magnalium or magnelium. Since magnesium is less dense than aluminium, these alloys are prized for their relative lightness and strength.

**alloy: mixture of two metal elements **

The use of magnesium in the commercial aerospace industry was generally restricted to engine-related components, due either to perceived hazards with magnesium parts in the event of fire or to corrosion. Currently, the use of magnesium alloys in aerospace is increasing, mostly driven by the increasing importance of fuel economy and the need to reduce weight.



1. Why is magnesium added to aluminum to make beverage cans?

2. Although magnesium is strong and light-weight, give two reasons why it is used only in the engines of aircraft and not in the body.
Copper

Despite competition from other materials, copper remains the preferred electrical conductor in nearly all categories of electrical wiring with the major exception being overhead electric power transmission where aluminium is often preferred. Copper wire is used in power generation, power transmission, power distribution, telecommunications, electronics circuitry, and countless types of electrical equipment. Electrical wiring is the most important market for the copper industry. This includes building wire, communications cable, power distribution cable, appliance wire, automotive wire and cable, and magnet wire. Roughly half of all copper mined is used to manufacture electrical wire and cable conductors. Many electrical devices rely on copper wiring because of its multitude of inherent beneficial properties, such as its high electrical conductivity, tensile strength, ductility, creep (deformation) resistance, corrosion resistance, low thermal expansion, high thermal conductivity, solderability, and ease of installation.



3. Why do you think that aluminum is preferred over copper for overhead powerlines?

4. Copper is an excellent choice for use in electronics. Why is magnesium becoming more widely used in small electronics such as phones, tablets and cameras?



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