NEUTRON

                                  NEUTRON 

A neutron is a subatomic particle found packed inside the nucleus of an atom alongside protons. Unlike protons, which are positive, or electrons, which are negative, a neutron has no electrical charge, making it completely neutral. Neutrons are very important because they act like "nuclear glue," helping to hold the positively charged protons together so the nucleus doesn't fly apart.

Even though they don't have a charge, neutrons have about the same mass as a proton, meaning they contribute significantly to the total weight of an atom. The number of neutrons in an atom can sometimes vary even within the same element; these different versions of the same atom are called isotopes. Without neutrons, the nuclei of most atoms would be unstable and could not exist!

ELECTRON

                                      ELETRON 

An electron is a tiny, subatomic particle that carries a negative electrical charge (-1). Unlike protons and neutrons, which stay bunched together in the center of the atom, electrons are constantly zipping around the nucleus at incredibly high speeds. They move within specific regions called shells or energy levels, creating what scientists often call an "electron cloud." Because they are so small—about 1,836 times lighter than a proton—their mass is usually considered almost zero when calculating the total weight of an atom.

​Despite their tiny size, electrons are the "social" part of the atom because they are responsible for chemical bonding. When two atoms meet, it is their electrons that interact, move, or get shared to create molecules like water or salt. The flow of these electrons from one atom to another is also what creates electricity, which powers everything from your phone to the lights in your home.

Proton

                                 PROTON

A proton is a tiny, subatomic particle located deep inside the center of an atom, in a region called the nucleus. It carries a positive electrical charge (+1), which acts like a magnet to hold the negatively charged electrons in their orbits. The most important thing to remember about a proton is that it defines the identity of an atom; the number of protons in the nucleus is known as the atomic number, and it tells us which element we are looking at. For example, every Hydrogen atom has exactly 1 proton, while every Carbon atom has 6.

​Protons are much heavier than electrons—about 1,836 times more massive, to be exact—and they stay tightly packed together with neutrons. They are held in place by a powerful "glue" known as the strong nuclear force, which is strong enough to keep all those positive charges from pushing each other away. Without protons, atoms wouldn't have the positive "pull" needed to stay together, and the different elements that make up our world wouldn't exist!

Molecule

                                Molecule 

molecule is formed when two or more atoms join together through chemical bonds. Think of atoms as individual building blocks, like LEGOs; when you snap two or more of them together, you create a molecule. These atoms can be of the same type, such as two Oxygen atoms joining to form the oxygen gas (O_2) we breathe, or they can be different types, such as two Hydrogen atoms joining one Oxygen atom to create a water molecule (H2O).

The force that holds these atoms together is called a chemical bond, which happens when atoms share or exchange their outer electrons to become more stable. A molecule is the smallest part of a substance that can exist on its own while still keeping all the chemical properties of that substance. For example, if you break a water molecule apart, it is no longer water—it just becomes separate hydrogen and oxygen atoms. Interestingly, molecules often have completely different properties than the atoms they are made of; while oxygen and hydrogen are both gases, they combine to form liquid water!

Atom

  

                                        ATOM

An atom is the smallest unit of an element that keeps its chemical identity. Imagine taking a piece of pure gold and cutting it into smaller and smaller pieces; the smallest piece you could possibly have while still being "gold" is a single atom.

At the center of every atom lies a tiny, dense nucleus containing positive protons and neutral neutrons. Zipping around this nucleus are much smaller, negative electrons, which move in specific paths called shells or orbits. Even though atoms make up everything we see, they are mostly empty space—if an atom were the size of a sports stadium, the nucleus would be like a small marble in the middle, and the electrons would be like tiny grains of sand in the very back rows!