1. Atoms and molecules form solids by building repeating patterns.

2. Types of Solids
Crystalline
Amorphous

3. Types of Solids Crystalline
Crystalline solids are solids that have a hard shape.
The shape is because the atoms and molecules form a repeating structure.
Examples: diamond, sugar, salt, quartz

4. Crystalline Solids

5. Crystalline Solids

6. Crystalline Solids

7. What if we could see the structure of salt?

8. What if we could see the structure of other crystalline solids?

9. Crystalline Solids: Summary
The shape of one piece of the pattern determines the shape of the large material.
That’s why you can get different shapes like diamonds, square crystals, and quartz crystals.

10. Types of Solids Amorphous
Amorphous solids have a shape, but you can squish them and change their shape.

11. Types of Solids Amorphous
Amorphous solids have a shape, but you can squish them and change their shape.
Examples: tires, rubber bands, cotton candy, candle wax, and Glurch!

12. Amorphous Solids

13. Amorphous Solids

14. Amorphous Solids

15. What if we could see the structure?

16. What if we could see the structure?

17. Amorphous Solids: Summary
Amorphous solids are made of long chains of molecules that are arranged in a pattern.
The chains can get stretched out or squished together.
This is why you can change the shape of an amorphous solid!