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