Electrolysis and Electric Conductors Quiz

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What is the primary reason why graphite is used in batteries and electrolysis?

Because it can conduct electricity due to free electrons moving between layers in its structure.

What is the term used to describe ionic substances that conduct electricity in the molten state, accompanied by a chemical change?

Electrolytes

Explain why covalent substances, such as petroleum jelly and wax, do not conduct electricity in either the solid or molten state.

Because they don't have ions

What is the key difference between ionic substances in the solid form and the molten state in terms of their ability to conduct electricity?

<p>Ionic substances in the solid form do not conduct electricity, while they do in the molten state.</p> Signup and view all the answers

What is the significance of testing the conductivity of solutions or liquids, as described in the experiment?

<p>To determine whether a substance is an electrolyte or not.</p> Signup and view all the answers

What is the primary purpose of electrolysis, and what are some of its key applications?

<p>The primary purpose of electrolysis is to bring about chemical changes by passing current electricity through various substances in the molten and/or aqueous states. Its key applications include the extraction of useful metals, electroplating, and testing the conduction of electricity in solids.</p> Signup and view all the answers

What is the fundamental difference between conductors and insulators, and how do they behave when electricity passes through them?

<p>Conductors allow an electric current to pass through them, whereas insulators do not. In conductors, no chemical changes occur when electricity passes through them.</p> Signup and view all the answers

What is the reason behind metals being conductors of electricity, and how does it relate to the structure of their atoms?

<p>Metals are conductors of electricity due to the delocalised electrons within the metal, which are responsible for the flow of current electricity throughout the metal. The electrons in the outer shell of the atoms of a metal move freely throughout the metal.</p> Signup and view all the answers

What is unique about graphite in terms of its conductivity, and how does it relate to its atomic structure?

<p>Graphite is the only non-metal that conducts electricity, and it does so due to its delocalised electrons. Like metals, graphite has delocalised electrons that allow it to conduct electricity.</p> Signup and view all the answers

What is the role of an ammeter in a circuit, and how does it relate to the concept of electric current?

<p>An ammeter is used to measure the current (flow of current) in a circuit, which arises from the flow of electrons. The ammeter reads a current when the solid conducts electricity.</p> Signup and view all the answers

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