Question

Malia classified some substances as shown in the table

. Malia's Table Good Conductors of Electricity are aluminum gold and platnium and her Bad Conductors of Electricity are silver cork and plastic. Why is Malia's table incorrect?
A Cork is a good conductor of electricity. BSilver is a good conductor of electricity. CPlatinum is a bad conductor of electricity. D Aluminum is a bad conductor of electricity.

Answer 1

Answer: Option (B) is the correct answer.

Step-by-step explanation:

It is known that metals are good conductors of heat and electricity. As electricity is the flow of electrons from one point to another and metals are the substances which contain excess of free electrons.

Hence, metals are good conductors of heat and electricity.

For example, gold, silver, copper, aluminium, platinum etc are all metals and good conductors of electricity.

Whereas substances like non-metals are bad conductors of electricity. Substances which do not allow the flow of electric current through it are known as insulators.

For example, plastic, rubber etc are insulators.

Since, Malia's table include silver as bad conductor which is not true.

Thus, we can conclude that Malia's table is incorrect because silver is a good conductor of electricity.

Answer 2

Malia's table good conductors of electricity are aluminum, gold and platinum while bad conductors of electricity are silver, cork and plastic but her classification is wrong as silver is very good conductor of electricity So , the answer is option B that is Silver is a good conductor of electricity that is the reason that makes her classification wrong.