Classify each of the following items - copper, air, wood, glass, iron, and saltwater - as a conductor or insulator based on their electrical properties and write a letter from its point of view (ex. “A day in the life of a conductor” or “A day in the life of an insulator”).
can someone please explain? thank you
Answers
Answer:
Explanation:
1 : Copper : Copper is a metal. ... The electrons can move freely through the metal. For this reason, they are known as free electrons. They are also known as conduction electrons, because they help copper to be a good conductor of heat and electricity.
2 : Air : An insulator (such as plastic, rubber, or glass) can have 1020x the resistivity of a metal like copper. ... Air (like in the atmosphere) is actually an excellent electrical insulator. This means that electricity can be sent through a conductor and it won't jump through the air.
3 : Wood : No, but under certain conditions, wood can also conduct electricity. For example, some composite wood might contain substances that can conduct electricity. Normally we define something through which electrons can be transferred easily as a conductor.
4 : Glass : Glass is actually an insulator. It doesn't allow the flow of electrons easily from atom to atom, as seen in substances like copper, and other metals which are excellent conductors of both heat and electricity. Insulators have electrons that are held tightly which means they aren't shared between other atoms.
5 : Iron : Iron is a good conductor of electricity but not the best.
Iron is a metal, which makes it a much better conductor than an insulator, but different metals have different conductivity levels. Iron is a relatively cheap metal and is widely used in products requiring conductance.
6 : It sounds crazy, but it's true! This is because salt water is a good conductor of electricity. ... (An ion is an atom that has an electrical charge because it has either gained or lost an electron.) When you put salt in water, the water molecules pull the sodium and chlorine ions apart so they are floating freely.
Hope it helps you.
Answer:
1 : Copper : Copper is a metal. ... The electrons can move freely through the metal. For this reason, they are known as free electrons. They are also known as conduction electrons, because they help copper to be a good conductor of heat and electricity.
2 : Air : An insulator (such as plastic, rubber, or glass) can have 1020x the resistivity of a metal like copper. ... Air (like in the atmosphere) is actually an excellent electrical insulator. This means that electricity can be sent through a conductor and it won't jump through the air.
3 : Wood : No, but under certain conditions, wood can also conduct electricity. For example, some composite wood might contain substances that can conduct electricity. Normally we define something through which electrons can be transferred easily as a conductor.
4 : Glass : Glass is actually an insulator. It doesn't allow the flow of electrons easily from atom to atom, as seen in substances like copper, and other metals which are excellent conductors of both heat and electricity. Insulators have electrons that are held tightly which means they aren't shared between other atoms.
5 : Iron : Iron is a good conductor of electricity but not the best.
Iron is a metal, which makes it a much better conductor than an insulator, but different metals have different conductivity levels. Iron is a relatively cheap metal and is widely used in products requiring conductance.
6 : It sounds crazy, but it's true! This is because salt water is a good conductor of electricity. ... (An ion is an atom that has an electrical charge because it has either gained or lost an electron.) When you put salt in water, the water molecules pull the sodium and chlorine ions apart so they are floating freely.
Explanation: