Give three physical properties of metals and suggest three uses related to the three properties
1. Conductivity: Metals are good conductors of electricity and heat. This property is used in the following ways:
- Electrical wiring: Copper and aluminum wires are used to transmit electricity.
- Heating: Metal wires are used in electric heaters to convert electrical energy into heat.
- Cooling: Metal heat sinks are used in electronic devices to dissipate heat.
2. Ductility: Metals can be stretched into thin wires and can be hammered into thin sheets. This property is used in the following ways:
- Jewelry making: Precious metals such as gold and silver are used to make jewelry.
- Packaging: Thin sheets of aluminum are used for packaging food and beverages.
- Construction: Thin sheets of metals are used to cover and protect buildings.
3. Strength: Metals are strong and can withstand a high degree of stress before deforming. This property is used in the following ways:
- Construction: Steel is used to build strong structures like bridges and skyscrapers.
- Transportation: Metals such as aluminum and titanium are used to manufacture lightweight and strong parts of airplanes and spacecraft.
- Tools: High-carbon steel is used to manufacture high-strength cutting tools.
Three physical properties of metals are:
1. Conductivity: Metals are good conductors of heat and electricity.
- Use: Copper is used in electrical wiring due to its high conductivity.
- Use: Aluminum is used in power lines because of its excellent electrical conductivity.
2. Malleability: Metals can be hammered or pressed into different shapes without breaking.
- Use: Gold is used to make jewelry because it can be easily shaped into intricate designs.
- Use: Steel is used to manufacture various structures and objects due to its malleability, such as buildings and kitchen utensils.
3. Ductility: Metals can be drawn into thin wires without breaking.
- Use: Copper wires are commonly used in electrical applications, such as power transmission.
- Use: Silver is used for making electrical contacts due to its superior ductility and conductivity.