Angelopayongcaspeidn
Answered

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Sagot :

Maryjeanazucena8idn

Answer:

1.Aluminium metal with this protective layer is used for making cooking utensils. Aluminium is a good conductor of heat. Thats why it is extensively used for making cooking utensils. Aluminum will form a layer of protective oxide that prevents further reaction.

2.Why is copper used for most electrical wiring? ... The lower the level of resistivity, the more electrical conductivity a metal has. Copper has low resistivity, and therefore is an excellent conductor. Copper is also less oxidative than other metals.

3.Why do metals conduct heat so well? The electrons in metal are delocalised electrons and are free moving electrons so when they gain energy (heat) they vibrate more quickly and can move around, this means that they can pass on the energy more quickly.

4.Why is liquid a poor conductor of heat? Molecules of liquids and gasestransfer heat by convection, i.e. their molecues carry the heat and move. They don't conduct. And Vibration energy of particles is less easily transmitted through a liquid and thereforeliquids are usually poorer conductors of heat

5.Gases are very poor conductors of heat because their particles are widely separated so that collisions do not occur frequently to enable efficient energy transfer.

Dustin0211idn

Answer:

A.

1.) Thermal Conductivity

2.) Copper

3.) Conductors

4-5.) Water and Minerals

B.

1.)During cooking, aluminum dissolves most easily from worn or pitted pots and pans. The longer food is cooked or stored in aluminum, the greater the amount that gets into food.

2.) The lower the level of resistivity, the more electrical conductivity a metal has. Copper has low resistivity and therefore is an excellent conductor. Copper is also less oxidative than other metals.

3.)The electrons in a metal are delocalised electrons and are free moving electrons so when they gain energy (heat) they vibrate more quickly and can move around, this means that they can pass on the energy more quickly.

4.)Molecules of liquids and heat by convection, i.e. their molecues carry the heat and move. They don't conduct. And Vibration energy of particles is less easily transmitted through a liquid and therefore liquids are usually poorer conductors of heat.

5.)Gases are very poor conductors of heat because their particles are widely separated so that collisions do not occur frequently to enable efficient energy transfer.

I hope this help :D

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