What is a labeled atom diagram?

A labeled atom diagram names the nucleus, protons, neutrons, and electrons with clean callout lines. Download the free labeled version at the top of this page.

Can I get a blank atom worksheet?

Yes. The blank / unlabeled atom uses the same layout with empty leader lines so students can fill in the parts themselves.

What are the three main particles in an atom?

Protons (positive, in the nucleus), neutrons (neutral, in the nucleus), and electrons (negative, outside the nucleus).

Is an atom diagram the same as a Bohr model?

Not exactly. An atom diagram usually labels the main particles. A Bohr model emphasizes electron energy levels/shells. Use this page for structure; use the Bohr Model Maker for shell diagrams of elements.

Are these atom diagrams free to print?

Yes. Every diagram on this page is free to view, download, and print with no account required.

Can I customize an atom diagram?

Yes. Use the generator below to change grade level, labels, or focus (for example more emphasis on the nucleus).

How is a Bohr model different from a basic atom diagram?

Bohr models emphasize energy levels/shells for electrons

Bohr models never show electrons

Basic diagrams never show a nucleus

They are exactly the same with no difference

Science Resource

Atom Diagram Labeled, Blank & Printable

Free atom diagrams — labeled parts, blank worksheets, simple kids versions, particle charts, and coloring. Download or print; no sign-up.

Labeled atom with protons, neutrons, electronsBlank worksheet versionParticle chart + Bohr noteFree to download & print — no sign-up

Free Atom Diagrams

Every version below is free to view and download — no sign-up. For Bohr energy-level models of specific elements, use the Bohr Model Maker.

Labeled

Labeled Atom Diagram

Classic school atom — nucleus, proton, neutron, and electron labeled for study.

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Core diagrams

Structure & focus

Print & practice

Test yourself: atom structure

A quick self-test — questions reshuffle each time, with a review of anything you miss at the end.

Question 1 of 8Score: 0

Where are protons found in an atom?

Need a custom version?

Change the grade level, which parts are labeled, or keep it ultra-simple — describe it and generate your own.

Customize Your Atom Diagram

Describe your atom diagram

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Ask for labeled parts, a blank worksheet, or a simple kids version

What is an atom diagram?

An atom diagram is a simplified picture of the smallest unit of an element. School diagrams usually show a nucleus (protons and neutrons) with electrons around it. Real atoms are mostly empty space and electrons do not sit on fixed tracks like planets, but the diagram is still the best way to learn the names and charges of the parts. Use a labeled version to study, or a blank version as a worksheet.

Parts of an atom

Proton: positive charge (+1), in the nucleus, mass about 1 atomic mass unit.
Neutron: no charge, in the nucleus, mass about 1 atomic mass unit.
Electron: negative charge (−1), outside the nucleus, much smaller mass.
Nucleus: tiny center that holds protons and neutrons and almost all the atom’s mass.

Atom diagram vs Bohr model

A basic atom diagram answers “what are the parts?” A Bohr model answers “how are electrons arranged in energy levels?” If you need shells (n = 1, 2, 3…) for a specific element, use our Bohr Model Maker. This page focuses on free labeled and blank atom structure diagrams for notes, quizzes, and elementary introductions.

How to use these free diagrams

Teach with the labeled atom, then check understanding with the blank worksheet. The simple kids version works for upper elementary; the particle chart locks in charge and location. The classic-vs-Bohr note helps students see that both pictures are models. All files are free to view, download, and print with no sign-up.