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James is a young child and he has just learned something very interesting. He learned that his pet named Rover and the neighbour's pet named Lassie are both examples of the same category-dogs. This reflects Piaget's concept of
Atomic Number
A fundamental characteristic of elements, representing the number of protons in the nucleus of an atom, which determines the chemical properties of the element.
Protons
Positively charged particles found within the nucleus of an atom.
Electrons
Subatomic particles with a negative electric charge, found in all atoms and acting as the primary carrier of electricity in solids.
Building Block
A fundamental component or base element used for constructing larger structures or systems.
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