What is electricity?
It's a versatile source of energy which powers our houses, businesses and schools.
What was the first electric phenomenon to be observed?
Amber which, when rubbed, attracted other small objects.
When was electricity put to use in domestic and industrial setting?
At the end of the 19th century.
What are some advantages of electricity?
It's easy to transport, it can be transformed into energy and it doesn't pollute.
What are some disadvantages of electricity?
It's difficult to store, it's transformation converts only a part from the primary resources and its production pollutes.
What is the smallest particle of matter?
The atom.
Describe the composition of an atom.
A core formed by neutrons and protons, electrons orbiting around the nucleus.
An atom with more protons than electrons is called...
Positive Ion
An atom with fewer protons than electrons is called...
Negative Ion
Which is the lightest subatomic particle?
The electron.
Which part of the atom is responsible for electricity?
The electron.
What defines an atom?
The number of protons and electrons.
What causes electricity?
The flow of charge caused by the movement of electrons.
Do atoms generally have a charge?
No, they usually don't.
When do electric phenomena happen?
When the charge balance of an atom is interrupted.
When does the charge balance of an atom get interrupted?
When an electron moves away from the atom and becomes free.
