Explore the three fundamental states of matter: solid, liquid, and gas. Watch how particles behave under different temperatures, learn phase transitions like melting and boiling, and practice identifying everyday states.
This thermometer is for water: ice at 0°C, liquid in between, steam at 100°C.
Particles are locked in a tight grid and vibrate gently in place.
How matter transforms when heat is added or removed.
A solid turns into a liquid when heated (e.g. ice melting into water).
A liquid turns into a solid when cooled (e.g. water freezing into ice).
A liquid turns into a gas when heated (e.g. boiling water into steam).
A gas cools down and turns back into a liquid (e.g. steam on a cold mirror).
Particles, temperature effects, phase transitions, and tips for young scientists.
All matter is made of tiny particles called atoms and molecules. The temperature slider controls thermal energy: heating makes particles move faster and spread apart, while cooling slows them down into a fixed structure.
Solids have a fixed shape and volume because particles vibrate in fixed spots. Liquids have a fixed volume but take the shape of their container as particles flow. Gases have neither fixed shape nor fixed volume, expanding to fill any space.
Adding heat causes melting (solid to liquid) and evaporation (liquid to gas). Removing heat causes condensation (gas to liquid) and freezing (liquid to solid).
Practice features three interactive mini-checks: classifying everyday objects, answering phase change questions, and deducing states from unlabelled particle motion.
Have learners predict what will happen before dragging the temperature slider. Ask them why a wooden table is a solid while orange juice is a liquid.
In advanced physics, plasma (found in stars and lightning) is often considered the fourth state of matter. This beginner lab focuses on the three states foundational to elementary science.
Next labs in this group. Everything runs in your browser.
It is a free interactive science web tool designed for beginners to understand solids, liquids, and gases through visual particle simulations, temperature experiments, and quick quiz games.
Observing that particles in solids vibrate in place while gas particles bounce freely helps learners build an intuitive mental model of why ice is hard and steam expands.
The four core transitions are melting (solid to liquid), freezing (liquid to solid), evaporation (liquid to gas), and condensation (gas to liquid).
Heating adds energy to particles, causing them to vibrate more violently, break rigid bonds, and spread out into a fluid or gas.
Practice mode offers three self-paced games: classifying real-world items, testing phase change definitions, and identifying states from anonymous particle movements.
Your correct answers and attempt counts are stored locally in your browser with no account needed.
It is created for elementary school students, homeschoolers, parents, and curious science beginners.
This tool does not simulate plasma physics, quantum states, supercritical fluids, or complex thermodynamic equations. It focuses strictly on core elementary curriculum states.
Processed locally in your browser. Your files are never uploaded to our servers.