1.

Which metal is the most easily oxidized?
A.) highly active metal
*B.) moderately active metal
C.) slightly active metal
D.) an inactive metal

2.
What happens in a voltaic cell?

*A.) Chemical energy is changed to a electrical energy.
B.) Electrical energy is changed to chemical energy.
C.) Electrical energy is changed to magnetic energy.
D.) Magnetic energy is changed to electrical energy.

3.
In a dry cell, the electrolyte is a ____.

A.) solid
*B.) paste
C.) liquid
D.) gas

4.
What elecrolyte is used in a lead storage battery?

A.) hydrochloric acid
*B.) sulfuric acid
C.) lead acetate
D.) lead nitrate

5.
Which of the following is true about fuel cells?

A.) They only produce energy in short bursts.
B.) They are inexpensive.
C.) They have never been built or used.
*D.) They can be designed so that they emit no pollutants.

Thank You.

1. A

2.A
3.b
4.b
5.d

I think I found out that it is A.

Yes, A is the correct answer.

Coop71441 is right! 100% thank youuuuu

Number one is wrong but the others look okay to me. Here is a link that gives the activity series for the metals. The most active metals are listed at the top; the least reactive metals or listen to the bottom. So which do you think is easiest oxidize?

http://www.files.chem.vt.edu/RVGS/ACT/notes/activity_series.html

did you see that jose?

1. To determine the most easily oxidized metal, you can refer to the reactivity series of metals. This series ranks metals based on their tendency to lose electrons and form positive ions during oxidation reactions. The higher a metal is on the reactivity series, the more easily it is oxidized.

In this case, the options given are highly active metal, moderately active metal, slightly active metal, and inactive metal. Among these options, the most easily oxidized metal would be the highly active metal. So, the correct answer is A.) highly active metal.

2. Understanding what happens in a voltaic cell requires knowledge of the conversion of energy forms. A voltaic cell is an electrochemical cell that converts chemical energy into electrical energy through a redox reaction. Redox reactions involve the transfer of electrons between species.

In a voltaic cell, two separate electrode compartments are connected by a conductive material called the electrolyte. The chemical reactions occurring at the electrodes involve oxidation and reduction. During oxidation, the chemical species loses electrons, and during reduction, the species gains electrons. This process results in the production of an electric current, converting the chemical energy into electrical energy.

Among the given options, the correct answer is A.) Chemical energy is changed to electrical energy.

3. The electrolyte in a dry cell refers to the substance that provides a medium for ion flow in the electrochemical cell. It is essential for the movement of ions between the electrodes and the completion of the chemical reaction.

In a dry cell, the electrolyte is typically in a paste form. The paste consists of a mixture of electrolytes, including ammonium chloride and zinc chloride, immobilized with a porous material to prevent the leakage of the electrolyte. This paste form allows for a more stable and compact design, making the dry cell convenient for portable devices like flashlight batteries.

Among the options provided, the correct answer is B.) paste.

4. A lead storage battery, commonly known as a car battery, utilizes a specific electrolyte to generate electrical energy. In this case, the electrolyte used is sulfuric acid. Sulfuric acid is a strong acid that dissociates into hydrogen ions (H+) and sulfate ions (SO4^2-) in the solution. This dissociation enables the movement of ions within the battery, facilitating the redox reactions necessary for energy storage and release.

Among the given options, the correct answer is B.) sulfuric acid.

5. Fuel cells are devices that convert chemical energy directly into electrical energy through an electrochemical process. Unlike traditional combustion methods, fuel cells operate with high efficiency and low pollutant emissions.

Among the options provided, the true statement about fuel cells is that they can be designed so that they emit no pollutants. Fuel cells generally use hydrogen gas as a fuel source and combine it with oxygen from the air to produce electricity, heat, and water vapor as byproducts. Since the only byproduct of the reaction is water vapor, fuel cells offer cleaner energy generation compared to conventional fossil fuel combustion.

Therefore, the correct answer is D.) They can be designed so that they emit no pollutants.

Overall, understanding the concepts behind these questions can help you arrive at the correct answers.