Electrically neutral matter refers to any substance that has an equal number of positive and negative charges. This means that the total positive charge due to protons in the atoms of the substance is exactly balanced by the total negative charge due to electrons.

Here's a breakdown:

* Atoms: The fundamental building blocks of matter are atoms, which consist of a positively charged nucleus (made of protons and neutrons) and negatively charged electrons orbiting the nucleus.

* Charge Balance: In a neutral atom, the number of protons (positive charge) is equal to the number of electrons (negative charge). This creates an overall neutral charge.

* Neutral Matter: When a collection of atoms forms a substance, the individual atoms retain their neutrality. Thus, the entire substance is considered electrically neutral.

Examples:

* Water (H₂O): Each water molecule contains 10 protons and 10 electrons, resulting in a neutral charge.

* Air: Composed of various gases like nitrogen, oxygen, and carbon dioxide, all of which are electrically neutral.

* Rocks: Made up of various minerals, each consisting of neutral atoms.

Important Note:

While most matter is electrically neutral in its natural state, it can become charged through processes like:

* Friction: Rubbing materials together can transfer electrons, creating a static charge.

* Ionization: Atoms can gain or lose electrons, becoming positively or negatively charged ions.

However, even in these cases, the overall charge of the matter remains relatively balanced due to the large number of neutral atoms present.