Setting up the board…
Take your time — nothing here can go wrong, and you can always try again.
Ready?
Atoms & Molecules
Take your time — nothing here can go wrong, and you can always try again.
Full screen — no distractions
Frequently Asked Questions
- What is "Atoms & Molecules" and how do you play it?
- Atoms & Molecules is a free, interactive science game designed for 7th Grade students. Sort substances into elements, compounds and mixtures. It supports 1-4 player(s), takes about 20 min, and is rated medium difficulty.
- Is this game free to play?
- Yes — Atoms & Molecules is 100% free with no signup required. Just open the page and start playing instantly in your browser on any device.
- What age or grade level is this game for?
- This game is designed for 7th Grade students. The science content is curriculum-aligned for 7th grade level, making it a great supplement to classroom learning.
- Can my child play this game on a tablet or phone?
- Yes. All LittleActivity games work on any device — desktop, tablet, or phone. No app download needed; games run directly in the browser.
- What science skills does this game cover?
- Atoms & Molecules covers 7th grade science skills through interactive gameplay. It builds problem-solving, critical thinking, and subject fluency in a fun, no-pressure environment.
More 7th Grade Science Games
The Periodic Table
Wire each element to its chemical symbol.
medium20 min
Acids and Bases
Test substances with an indicator: acid, base or neutral?
medium20 min
Chemical Reactions and Physical Changes
Run changes through the lab: physical or chemical?
medium20 min
Waves
Wire each wave term to its meaning.
medium20 min
The Electromagnetic Spectrum and Light Waves
Put types of light in order by wavelength and energy.
medium20 min
Sound Waves
Answer questions about how sound travels.
medium20 min