Play and learn in our virtual science lab!

Play with different solids, liquids, and gases. Discover how changes in temperature affect states of matter as you freeze soda, pop popcorn, melt gold, and more! Answer the burning question, “Does it melt?!”

States of Matter is No. 11 in Tinybop’s award-winning Explorer’s Library, a series of apps designed to introduce kids to big ideas. Other Explorer’s Library apps include The Human Body, Plants, Simple Machines, The Earth, Weather, Homes, Skyscrapers, Space, Mammals, and Coral Reef.

Each Explorer’s Library app teaches kids foundational science. Kids learn by playing, experimenting, observing, asking questions, making guesses, and finding answers. We hope each app inspires conversations between you and your kids and sparks more learning in the world around us.

+Freeze soda, pop popcorn, melt gold, and more!
+Explore the shape, color, behavior, sounds, and movement of different states of matter.
+Discover how different objects behave in extreme temperatures (from -500 °F to 5500 °F!). Watch solids melt, liquids freeze, and gases liquefy as you change the temperature.
+Explore phase changes and discover which changes cannot be reversed.
+Explore how molecules move at different temperatures.
+Discover which states of matter take the shape of the container they’re in.
+Discover the melting and freezing points of different objects.
+FREE States of Matter Handbook has technology tips and basic info for teachers and parents.
+Interactive text labels in 30+ languages teach vocabulary.
+Aligns with Next Generation Science Standards (NGSS).
+Fun for the whole family — play and learn together.
+No third-party advertising.
+Open-ended activities with no rules. Curiosity and creativity are rewarded.
+Original artwork by Jeanelle Mak Petrillo.
+Original sound design.

Privacy policy
We take your and your child’s privacy very seriously. We do not collect or share personal information about your child, nor do we allow any third-party advertising.

When the camera, microphone, and other services are used within an app, your information is neither collected nor distributed outside of the app.

Read our complete privacy policy at

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What’s New

Version 2.0.2

Minor improvements.

Ratings and Reviews

4.1 out of 5
40 Ratings

40 Ratings

Tiara.Hati ,


This is so good ,I have 17 app for homeschool =
1. The Human Body
2. Skyscraper
3. Weather
4. Plants
5. Coral Reef
6. Earth
7. Creature Garden
8. The Robot Factory
9. Monster
10. Space
11. Me
12. Simple Machine
13. Skyscraper
14. Infinite Arcade
15. Mammals
16. Everything Machine
17. States Of Matter

That’s a lot and I want to give you some request =
1. How if you add feature in some app like =
- The Human Body = Add a Cell & DNA to discover
- Mammals = Add a Cell and other animals like Insect & Fish
- The Earth = Add Atmospheric Layer & Plate Tectonics

2. Some ideas for new app=
- Elements of the Periodic Table= There’s Element, Atoms, Nuclear, Radioactive, Molecules to discover and experiment.

- Transportations = There’s Tank, AAV, Jet, Car, Motorcycle to build & discover how it work.


Developer Response ,

Hi! We are so happy to hear that you are enjoying our apps. Thank you for all of these awesome suggestions! We will definitely keep them in mind when making updates to our apps and thinking of new ideas. If you have any other ideas - we'd love to hear them! Please feel free to email us at Thanks!

Lesie_99 ,

Love this App

My three children are frequent fans of Tinybop and their apps. Another amazing app loved by the family! Well done Tinybop team! My little one was upset when she burnt her popcorn but a great lesson learned on heat and the states of matter! 5 stars.

Developer Response ,

We are so happy to hear that your children are enjoying our apps! As a tip, you can reset the popcorn screen by switching containers at the bottom left-hand corner of the screen. That way, your child can continue to experiment with popcorn even after it burns! 🍿

lambsauce12 ,

Amazing app

I love this game because I’m into science but I have a suggestion. You could add the 4th state of matter which is plasma. You would be able to look at how plasma interacts with different things.

Developer Response ,

We are so happy to hear that you are enjoying States of Matter! We would love to get plasma in the app too. What types of items would you want to see? Please feel free to email us at with any suggestions! Thanks!

App Privacy

The developer, Tinybop Inc., indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Usage Data
  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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