Atoms and How They Fit Together

What Are Atoms?

Atoms are the tiniest building blocks of everything around you. They're so small you can never see one, even with a regular microscope. Everything in the universe—from the air you breathe to the phone you hold—is made of atoms stuck together in different ways.

Imagine if you could keep cutting something into smaller and smaller pieces. Eventually, you'd reach a piece so tiny that you couldn't cut it any smaller without changing what it is. That's an atom.

What Are Atoms Made Of?

Each atom has a centre called a nucleus (pronounced NOO-clee-us). This is like the heart of the atom. Inside the nucleus are two types of particles: protons (which are positively charged) and neutrons (which have no charge).

Buzzing around the nucleus are much tinier particles called electrons (which are negatively charged). The electrons zoom around the nucleus in layers, kind of like planets orbiting the sun, though they don't actually follow set paths.

How Are Atoms Arranged?

Atoms don't usually exist alone. They join together to make molecules. When atoms connect, they share or swap electrons with each other. This creates bonds—the glue that holds atoms together.

Different arrangements of atoms create different materials. Two atoms of hydrogen and one atom of oxygen join together to make a molecule of water. Change the arrangement, and you get something completely different.

There are 118 different types of atoms in nature, called elements. Hydrogen is the simplest and most common. You can find all of them listed on something called the Periodic Table. Scientists use this table to understand how atoms behave and what they can create together.

Understanding atoms helps us explain why things burn, how our bodies work, and even why the sky is blue!

What Are Atoms?

Atoms are super tiny pieces. Everything is made of atoms. You are made of atoms. Your food is made of atoms. Even air is made of atoms!

Atoms are too small to see. Even the biggest microscope can't show you a single atom. But billions of atoms stuck together make everything we touch.

What's Inside an Atom?

An atom has a tiny centre called a nucleus. Inside are two kinds of tiny bits: protons and neutrons.

Around the nucleus zoom even tinier bits called electrons. They spin around the nucleus like a merry-go-round.

How Do Atoms Stick Together?

Atoms like to hold hands. They join with other atoms to make molecules. When atoms join, they hold on using bonds—like atomic glue.

Different atoms stick together in different ways. Oxygen and hydrogen atoms join to make water. Carbon atoms join to make diamonds. The same atoms can make different things depending on how they stick!

There are 118 different kinds of atoms. Scientists call them elements. Hydrogen is the easiest one. All atoms are on a special chart called the Periodic Table.

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