After this lesson, you should be able to:

• Understand that the positive and negative charge on objects originates in the atom
• Distinguish between charged and uncharged or neutral objects in terms of their behaviour
• Explain the charge on charged objects in terms of electron transfers from one object to the other
• Know that objects with like charges repel, but with unlike charges attract
• Know that charged objects can also attract uncharged objects
• Understand why electric forces are classified as non-contact forces
• Appreciate that lightning, in nature, is an electrical phenomenon