Which of the following is a good conductor of electricity? a. glass b. plastic c. rubber d. water

is a good conductor of electricity.

Further Explanation:

The flow of electrons is known as electricity. It is one of the properties of electric charge. An electric field is generated by the presence of electric charges and the motion of electric charges is called an electric current.

Conductors are the substances that allow electric current to pass through them. Metals have delocalized electrons in them that can move freely, and therefore,  these are good conductors of electricity. Copper, silver, and aluminium are good conductors of electricity.

Insulators are the substances through which electric current cannot flow. Non-metals are bad conductors of electricity. Non-metals are electron deficient in nature and they tend to gain electrons. So these do not have any freely moving electrons and therefore cannot conduct electricity. Mica, paper, plastic, and wood are the bad conductors of electricity or insulators.

A. Glass

It is basically silicon dioxide that is a covalent compound formed by mutual sharing of electrons. There are no free electrons in glass so it cannot conduct electricity. Therefore glass is a bad conductor of electricity.

B. Plastic

It does not have freely moving electrons in it so it cannot conduct electricity. Therefore plastic is a bad conductor of electricity.

C. Rubber

It does not have freely moving electrons in it so it cannot conduct electricity. Therefore rubber is a bad conductor of electricity.

D. Water

Pure water is an insulator as it does not contain any ions in it. But normal water has some impurities of calcium and magnesium ions. The presence of ions is responsible for the conductivity of water and therefore water is a good conductor of electricity.

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Answer Details:

Grade: High School

Chapter: Metals and non-metals

Subject: Chemistry

Keywords: water, plastic, rubber, glass, conductor, insulator, electricity, electrons, electric charge, pure water, normal water, covalent compound, silicon dioxide.