CELLS AND BATTERIES KEY TERMS AND CONCEPTS
CONCEPTS
Students will know:
· A battery consists of two or more galvanic cells connected in series. The voltage of the battery is the sum of the voltages of the cells.
· Primary cells are non-rechargeable cells that run until their reactants are used up. Disposable batteries contain primary cells. Secondary cells an be recharged by the addition of electrical energy.
· Commercially available cells and batteries include the alkaline dry cell (a primary cell); the lead storage battery (a secondary battery commonly used in vehicles); the lithium-ion battery (a common secondary battery with many applications); the fuel cell (a galvanic cell receiving a continuous supply of reactants).
· A battery consists of two or more galvanic cells connected in series. The voltage of the battery is the sum of the voltages of the cells.
· Primary cells are non-rechargeable cells that run until their reactants are used up. Disposable batteries contain primary cells. Secondary cells an be recharged by the addition of electrical energy.
· Commercially available cells and batteries include the alkaline dry cell (a primary cell); the lead storage battery (a secondary battery commonly used in vehicles); the lithium-ion battery (a common secondary battery with many applications); the fuel cell (a galvanic cell receiving a continuous supply of reactants).
KEY TERMS
Battery:
A group of two or more galvanic cells connected in series.
Primary Cell:
A cell that cannot be recharged.
Secondary Cell:
A cell that can be recharged by being attached to an external source of electrical energy; recharging reverses the chemical reaction that generates the electrical energy.
Fuel Cell:
A galvanic cell for which the reactants are continuously supplied.
Electrode:
A solid electrical conductor.
Electrolyte:
An aqueous electrical conductor.
Electric Potential Difference (voltage):
The potential energy difference per unit charge.
Volt (V):
The SI unit for electric potential differences; 1 V = 1 J/C.
Electric Current:
The rate of flow of charge past a point.
Ampere (A):
The SI unit for electric current. 1A = 1 C/s
Coulomb (C):
The SI unit for electric charge.
A group of two or more galvanic cells connected in series.
Primary Cell:
A cell that cannot be recharged.
Secondary Cell:
A cell that can be recharged by being attached to an external source of electrical energy; recharging reverses the chemical reaction that generates the electrical energy.
Fuel Cell:
A galvanic cell for which the reactants are continuously supplied.
Electrode:
A solid electrical conductor.
Electrolyte:
An aqueous electrical conductor.
Electric Potential Difference (voltage):
The potential energy difference per unit charge.
Volt (V):
The SI unit for electric potential differences; 1 V = 1 J/C.
Electric Current:
The rate of flow of charge past a point.
Ampere (A):
The SI unit for electric current. 1A = 1 C/s
Coulomb (C):
The SI unit for electric charge.
References
- Di Guiseppe, M., Haberer, S., Salciccioli, K., Sanader, M, Vavitsas, A. (2012) Chemistry 12. Toronto: Nelson Education Ltd.
- van Kessel, H., Jenkins, F., Davies, L., Plumb, D., Di Guiseppe, M., Lantz, O., Tompkins, D. (2003). Chemistry 12. Toronto: Thomson Canada Limited.
- http://www.wikipedia.org