Part of GED® Science: Physical Science
GED® Science: Matter and Its States (Deep Dive)
A deep dive into matter, expanding the single 'Matter and Its States' lesson from the GED® Physical Science course into a full mini-course. You'll use the particle model to understand solids, liquids, and gases, follow how matter changes state, read heating curves, calculate and compare density, tell physical changes from chemical changes, and learn about mixtures and solutions. Plain language, all-new labeled diagrams, common-misconception warnings, and GED®-style practice with full explanations throughout.
📚 Course Curriculum
Matter is anything that has mass and takes up space (volume). Mass is how much material is present; volume is how much space it fills. …
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When you heat or cool matter, it can change from one state to another. Each change has a name, and the same substance stays the …
Open trial session →Heat a solid steadily and something surprising happens to its temperature. It rises — but then pauses while the substance changes state, even though you …
Open trial session →Why does a small steel bolt sink while a huge log floats? The answer is density — how much mass is packed into a given …
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Matter can change in two very different ways, and telling them apart is a favorite GED® topic. [[figure:physical_vs_chemical A physical change keeps the same substance; …
Open trial session →Most everyday matter isn't pure — it's mixed. A mixture is two or more substances physically combined (not chemically), so each keeps its own properties …
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Course Syllabus
This self-paced GED® Science course follows a 6-lesson sequence. Work through the modules in order so that each skill supports the next.
Course sequence
Module 1 - Lessons 1-3
- Matter & the Three States
- Changes of State
- Heating & Cooling Curves
Module 2 - Lessons 4-6
- Density
- Physical vs. Chemical Changes
- Mixtures, Solutions & Reading Matter Data
Practice and completion
- Use worked examples and lesson practice to check understanding after each module.
- Review incorrect answers, explain the correction, and repeat weak skills.
- Complete the available mixed or final course practice to demonstrate readiness.
Course Outcomes
By the end of this course, learners will be able to:
- Explain the key scientific ideas and vocabulary in Matter & the Three States.
- Interpret observations, data, models, or evidence related to Changes of State.
- Apply scientific reasoning to questions involving Heating & Cooling Curves.
- Evaluate explanations and identify common errors about Physical vs. Chemical Changes.
- Connect Mixtures, Solutions & Reading Matter Data with other course concepts in mixed practice.
- Use feedback and answer explanations to diagnose and correct mistakes.
- Complete mixed, exam-style practice with clearer reasoning and greater independence.
📝 Practice Questions
29 interactive questions with instant feedback and explanations.
Enroll for free to unlock the full practice bank after the trial sessions.