Phase Change Phenomena Poster Set

Help students investigate what happens to matter when it changes between solid, liquid, and gas states with this engaging Phase Change phenomena resource.

This six-poster collection uses visually rich science phenomena to encourage students to observe changes in matter, analyze particle models, identify patterns, ask questions, and develop explanations about how energy transfer affects the motion and arrangement of particles.

Students move beyond simply naming melting, freezing, evaporation, and condensation and begin using evidence and models to explain what is happening at the particle level during a phase change.

What’s Included

This resource includes six individual full-color portrait phenomena posters.

Each poster includes:

A high-interest phenomenon question

A detailed science visual or particle model

“What do you notice?” observation prompts

“What do you wonder?” discussion questions

Key science vocabulary

A “Try This Thinking” activity or challenge

A CER Starter for Claim, Evidence, and Reasoning practice

A concise science statement reinforcing the main concept

Explore Changes in States of Matter

Students investigate how substances can change from one state of matter to another.

The visual phenomena provide opportunities to examine melting, freezing, evaporation, condensation, and other familiar changes while encouraging students to look beyond what they can see and consider what is happening to the particles within the substance.

Students begin connecting observable changes to changes in particle motion and arrangement.

Connect Energy Transfer to Phase Change

Phase changes are closely connected to the transfer of thermal energy.

Students can investigate questions such as:

What happens when energy is added to a substance?

What happens when energy is removed?

Why does a solid melt?

Why does a liquid freeze?

What causes evaporation or condensation?

How does particle motion change when temperature changes?

These questions help students connect energy transfer with changes in the state of matter.

Use Particle Models to Explain What Cannot Be Seen

Many important changes during a phase change occur at a scale students cannot observe directly.

The posters use visual models to help students reason about particles and how their movement and spacing change as energy enters or leaves a system.

Students can compare models, identify patterns, and use those models to explain observable changes.

Distinguish Phase Change From Creating New Matter

Students can explore the important idea that a substance remains the same substance during a phase change even though its appearance or state changes.

This gives students opportunities to consider evidence for conservation of matter while developing a clearer distinction between physical changes and processes that produce new substances.

Build Observation and Questioning Skills

Each poster includes structured Notice and Wonder prompts that encourage students to examine the phenomenon before receiving an explanation.

Students can:

Describe observable changes

Identify patterns

Compare states of matter

Analyze particle models

Generate scientific questions

Make predictions

Develop and revise explanations

These routines support inquiry-based learning and meaningful classroom discussion.

Strengthen Science Vocabulary

Important science vocabulary is embedded within meaningful phenomena.

Students encounter concepts related to phase change, solid, liquid, gas, melting, freezing, evaporation, condensation, thermal energy, temperature, particles, and energy transfer while using those terms to explain what they observe.

Displaying the posters throughout the unit gives students an ongoing visual vocabulary reference.

Support CER Practice

Each poster includes a student-friendly CER Starter.

Students practice making a Claim, identifying Evidence from a phenomenon or model, and using Reasoning to explain how the evidence supports their scientific explanation.

Repeated CER opportunities help students move from describing what happened to explaining why the change occurred.

Develop and Revise Scientific Models

Phase change provides an excellent context for scientific modeling.

Students can begin with an initial model of what they think is happening, compare their ideas with new evidence, and revise the model as their understanding develops.

This helps reinforce the idea that scientific models are tools used to explain processes that cannot always be directly observed.

Great for Classroom Use

Use these posters for:

Whole-group science instruction

Phenomenon launches

Science focus walls

Notice and Wonder routines

Small-group instruction

Science centers

Science notebook responses

Vocabulary development

CER practice

Particle modeling

States of matter investigations

Energy transfer discussions

Partner conversations

Unit introductions

Review and reinforcement

Classroom displays

Revisit the Phenomena Throughout the Unit

Introduce each phenomenon before students have developed a complete explanation and collect their initial thinking.

As students investigate particle motion, temperature, and energy transfer, return to the same posters and ask them to revise their explanations.

Students can add new evidence, improve their particle models, and use increasingly precise science vocabulary to explain each phase change.

Make Particle-Level Science Easier to Understand

Students can easily observe ice melting or water evaporating, but they cannot directly see the particles responsible for those changes.

These posters bridge that gap by combining observable phenomena with visual models, structured questioning, vocabulary development, and CER practice.

The result is a versatile instructional resource that supports deeper understanding throughout a Phase Change unit.

Important Disclaimer

This resource is independently created and is not affiliated with, endorsed by, sponsored by, or produced by Amplify Education. The use of “Amplify” in the product title is intended only to help educators identify the curriculum topic with which this supplemental resource may be used. Amplify Education owns its respective trademarks and curriculum materials.