The EducationUniverse

Home › Interactives › Chemistry › Phase Change Explorer

Chemistry · Particles & States of Matter

Phase Change Explorer, Years 9–10

A phase-change model showing a lattice, a mixed phase, flowing liquid, boiling bubbles and gas motion, where students add or remove thermal energy in either direction to explore melting, freezing, boiling and condensing and the heating curve. The full interactive is available to licensed Education Universe users.

Years 9–10Explorer

Try interactive

Learning outcomes

Teaching guidance

Ask students to explain the flat sections of the heating curve before revealing the particle view.

Use Phase Change Explorer with your class

Start a free 30-day trial with class codes and progress tracking, or talk to us about your school's licence.

Related interactives

Chemistry · Years 9–11

Molecular Dynamics: Liquid

A fluid particle simulation in which local density creates pressure and viscosity smooths relative motion. Students adjust temperature, cohesive attraction, particle…

Chemistry · Year 8

States of Matter Challenge

A randomised Year 8 challenge where students identify states from particle diagrams, predict the effect of heating and cooling, explain the changes of state using…

Chemistry · Year 8

States of Matter explorer

A focused particle-model viewer for comparing the arrangement, spacing and motion of particles in a solid, a liquid and a gas. It gives Year 8 students a shared visual…

Chemistry · Years 7–8

States of Matter Investigation

Students investigate how solids, liquids and gases differ by comparing particle arrangements and movement. The guided investigation uses heating and phase changes to…

Chemistry · Years 9–10

Acids, Bases, pH & Neutralisation Investigation

A guided investigation in which students interpret pH values, use indicators to classify solutions, connect acidic and basic behaviour to H⁺ and OH⁻ particles, and model…

Chemistry · Years 11–12, Undergraduate

Amino Acid Explorer

Students select amino acids in a 3D viewer and inspect each side chain and its properties. They can pin one amino acid and switch to another to identify what changed in…

Phase Change Explorer is one of the licensed interactives in The Education Universe. This page describes it; teachers use it in lessons and classes with a licence or the free trial.