What Are Atoms?

🕐 6 min 38 sec 👦 Ages 9–12 🌍 English
Join Owlo and Koko in a fun science adventure to discover what atoms are and how they make up everything around us!
Understand the concept of atoms Learn that everything is made of matter Explore how scientists study tiny particles
📖 Story Script
                    Koko:
                    Owlo, I have a question that has been bothering me all day. My teacher said everything is made of atoms. But what even is an atom?
                
                    Owlo:
                    Oh, that is one of my favourite questions in all of science, Koko. Let's head to the science lab. I think we need a few things to help explain this properly.
                
                    Koko:
                    Okay, we're here. It smells like pencils and something fizzy in here. So, what is an atom exactly?
                
                    Owlo:
                    Everything you can see, touch, or smell is made of matter. And all matter is made of incredibly tiny building blocks called atoms. Every single thing, this table, the air, even you and me, is made of atoms.
                
                    Koko:
                    Wait, so I am made of atoms right now? That is kind of strange to think about.
                
                    Owlo:
                    It really is. Now, atoms are so small that you cannot see them, even with a regular microscope. Millions of atoms could fit across a single strand of your fur.
                
                    Koko:
                    Millions? That is so tiny I cannot even imagine it. How do scientists even know they exist then?
                
                    Owlo:
                    Great thinking. Scientists used very powerful instruments and clever experiments over hundreds of years to figure it out. They could not see atoms directly, but they could observe how matter behaved and work backwards from the clues.
                
                    Koko:
                    Like detectives, but for science.
                
                    Owlo:
                    Exactly like detectives. Now, let me show you something. See these coloured balls in the model kit over here?
                
                    Koko:
                    Yes, the red and blue and white ones. We use those to build molecule models in class sometimes.
                
                    Owlo:
                    Perfect. Each one of those balls represents a single atom. Now, atoms themselves are made of even smaller parts inside them. There is a centre called the nucleus, and tiny particles called electrons that move around it.
                
                    Koko:
                    So an atom is like a tiny solar system? With a centre and things going around it?
                
                    Owlo:
                    That is a wonderful way to picture it. The nucleus in the centre holds most of the atom's mass. The electrons zipping around the outside are what allow atoms to connect with other atoms.
                
                    Koko:
                    And when atoms connect, what happens?
                
                    Owlo:
                    When atoms join together, they form molecules. For example, two hydrogen atoms and one oxygen atom join together to make one molecule of water.
                
                    Koko:
                    So the water I drink every day is just a bunch of tiny atom teams holding hands?
                
                    Owlo:
                    I love that description. Yes, essentially. Different combinations of atoms make completely different substances. That is why water and air feel so different, even though both are invisible at the atomic level.
                
                    Koko:
                    But if everything is made of atoms, why does a rock feel so different from, say, a cloud?
                
                    Owlo:
                    Because it comes down to which atoms are involved, and how tightly they are packed together. In a rock, atoms are packed very closely and held together strongly. In a cloud, the molecules are spread far apart and floating freely.
                
                    Koko:
                    So atoms are kind of like the alphabet. You use the same letters but you get completely different words depending on how you arrange them.
                
                    Owlo:
                    Koko, that might be the best analogy I have heard in years. You are absolutely right. There are about 118 known types of atoms, which we call elements. Everything in the universe is built from combinations of those 118 elements.
                
                    Koko:
                    Only 118? And they make everything? The stars, the ocean, my sandwich at lunch?
                
                    Owlo:
                    Every single thing. Scientists organised all 118 elements into a chart called the periodic table. Each element has its own name, symbol, and properties. Carbon, oxygen, gold, and iron are all examples of elements.
                
                    Koko:
                    I have heard of those. So gold jewellery is just a whole lot of gold atoms stuck together?
                
                    Owlo:
                    Precisely. Pure gold is made entirely of gold atoms. And that is what makes each element unique. Gold atoms always behave like gold. Oxygen atoms always behave like oxygen.
                
                    Koko:
                    This is making my brain feel very full in a good way. So atoms are the smallest building blocks of everything, they have a nucleus and electrons, they join to make molecules, and there are 118 types?
                
                    Owlo:
                    You have been paying close attention. Before we wrap up, I want you to try something. Look around this lab and pick one object. Then tell me what you think it might be made of at the atomic level.
                
                    Koko:
                    Okay. That glass beaker. It is clear and hard, so maybe it is made of very tightly packed atoms that are arranged in a way that lets light through?
                
                    Owlo:
                    That is a thoughtful answer. Glass is mostly made of silicon and oxygen atoms bonded together in a specific pattern. That pattern is what gives it that clear, hard quality. Well reasoned, Koko.
                
                    Koko:
                    Science is actually amazing. I feel like I have been walking around in a world full of secret tiny things my whole life and never knew.
                
                    Owlo:
                    That feeling never goes away, even after decades of studying. The more you learn, the more wondrous the world becomes. Now, before you head off, can you summarise what we discovered today?
                
                    Koko:
                    Okay. Everything in the universe is made of tiny building blocks called atoms. They are so small that millions fit across a single strand of fur. Atoms have a nucleus in the middle and electrons moving around the outside. When atoms join together they make molecules, like how two hydrogen atoms and one oxygen atom make water. There are 118 types of atoms called elements, and they are all organised in something called the periodic table. Basically, the whole universe is just 118 types of tiny things arranging themselves in different ways, which is honestly the most mind-blowing thing I have learned all week. Next I want to find out what is actually inside the nucleus, because if atoms have smaller parts inside them, maybe those parts have even smaller parts too.
                
                    Owlo:
                    Now that, Koko, is exactly the kind of question that makes a great scientist. I think we have a very exciting lesson ahead of us.