The atom is the smallest representative unit of a single chemical element and it contains some numbers of protons, neutrons and electrons. The number of protons for an element is fixed and represented by its atomic number. The number of neutrons can vary, which is the basis for isotop...
? Assuming the atom is uncharged, how many electrons are present? Protons and Neutrons:Protons and neutrons constitute two sorts of subatomic particles. Protons are drawn towards a negative charge, as they constitute a positive charge. N...
When we switch on the power, the copper sulfate solution splits into ions (atoms with too few or too many electrons). Copper ions (which are positively charged) are attracted to the negatively charged brass electrode and slowly deposit on it—producing a thin later of copper plate. Meanwhile...
The fuel cell has two platinum electrodes with a porous acid-electrolyte material sandwiched between them. As the exhaled air from the suspect flows past one side of the fuel cell, the platinum oxidizes any alcohol in the air to produce acetic acid, protons and electrons. The electrons flow ...
When an H2 molecule comes in contact with the platinum on the catalyst, it splits into two H+ ions and two electrons (e-). The electrons are conducted through the anode, where they make their way through the external circuit (doing useful work such as turning a motor) and return to ...
Modern solar cells are made of semiconductor materials like silicon or cadmium telluride. Light falling on this material energizes its electrons, giving them enough energy to create a flow of electrical current. A typical solar panel combines dozens of solar cells in an electrical circuit to produc...
When an H2 molecule comes in contact with the platinum on the catalyst, it splits into two H+ ions and two electrons (e-). The electrons are conducted through the anode, where they make their way through the external circuit (doing useful work such as turning a motor) and return to ...
Thenoble metalsgold, silver, platinum, palladium, and some other elements do not produce a characteristic flame test color. There are several possible explanations for this, one being that the thermal energy isn't sufficient to excite the electrons of these elements enough to release energy in th...
The protons move through the exchange membrane, toward the oxygen on the cathode side, and the electrons make their way through a wire between the anode and cathode. On the cathode side, the hydrogen and oxygen combine to form water. Many cells are connected in series to move substantial ...
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