Chemical Effects of Electric Current Quiz

What is the difference between conductors and insulators?

• Conductors allow the flow of water, while insulators do not.

• Conductors are always solid, while insulators are always liquid.

• Conductors allow the flow of electric current, while insulators do not.

• Conductors are used in cooking, while insulators are used in construction.

Give an example of a good conductor and a good insulator.

• Good conductor: Iron, Good insulator: Wood

• Good conductor: Silver, Good insulator: Plastic

• Good conductor: Copper, Good insulator: Rubber

• Good conductor: Aluminum, Good insulator: Glass

Explain the process of electroplating.

• The process of electroplating involves the use of an electric current to deposit a thin layer of metal onto a conductive surface.

• The process of electroplating involves using a magnetic current to deposit a thick layer of metal onto a non-conductive surface.

• Electroplating is the process of using a chemical reaction to coat a surface with a layer of metal.

• Electroplating is the process of using heat to melt a layer of metal onto a surface.

What are the uses of electroplating in everyday life?

• To make paper waterproof

• Decorative or protective coating on metal objects

• As a fuel for vehicles

• Used for cooking food

What is electrolysis and how does it work?

• Electrolysis is the process of using sound waves to drive a chemical reaction.

• Electrolysis is the process of using an electric current to drive a non-spontaneous chemical reaction.

• Electrolysis is the process of using heat to drive a chemical reaction.

• Electrolysis is the process of using a magnetic field to drive a chemical reaction.

Describe the chemical changes that occur in electrolytes during electrolysis.

• The ions are converted into solid particles and do not participate in any reaction.

• The ions remain stationary and do not undergo any reaction.

• The ions move away from the electrodes and react with each other.

• The ions move towards the electrodes and undergo oxidation or reduction reactions.

How does electric current affect the substances in an electrolyte?

• It causes chemical reactions that break down the substances in the electrolyte.

• It causes the substances to solidify

• It has no effect on the substances in the electrolyte

• It turns the substances into gas

Explain the effects of electric current on substances in terms of chemical changes.

• Electric current causes substances to evaporate

• Electrical current can cause chemical changes such as electrolysis.

• Electric current has no effect on substances

• Electric current causes substances to freeze