Table of contents

1. Intro to General Chemistry3h 48m
2. Atoms & Elements4h 16m
3. Chemical Reactions4h 10m
4. BONUS: Lab Techniques and Procedures1h 38m
5. BONUS: Mathematical Operations and Functions48m
6. Chemical Quantities & Aqueous Reactions3h 53m
7. Gases3h 49m
8. Thermochemistry2h 37m
9. Quantum Mechanics2h 58m
10. Periodic Properties of the Elements3h 9m
11. Bonding & Molecular Structure3h 29m
12. Molecular Shapes & Valence Bond Theory1h 57m
13. Liquids, Solids & Intermolecular Forces2h 23m
14. Solutions3h 1m
15. Chemical Kinetics2h 53m
16. Chemical Equilibrium2h 29m
17. Acid and Base Equilibrium5h 1m
18. Aqueous Equilibrium4h 47m
19. Chemical Thermodynamics1h 50m
20. Electrochemistry2h 42m
21. Nuclear Chemistry2h 36m
22. Organic Chemistry5h 7m
23. Chemistry of the Nonmetals2h 39m
24. Transition Metals and Coordination Compounds3h 16m

1. Intro to General Chemistry

Classification of Matter

General Chemistry

1. Intro to General Chemistry

Classification of Matter

Previous problemNext problem

Struggling with General Chemistry?

Join thousands of students who trust us to help them ace their exams!Watch the first video

Multiple Choice

Which of the following best describes a key difference between crystalline solids and amorphous solids?

Crystalline solids can flow easily, while amorphous solids are rigid and do not flow.

Both crystalline and amorphous solids have identical particle arrangements.

Amorphous solids have a fixed melting point, while crystalline solids melt over a range of temperatures.

Crystalline solids have a well-ordered, repeating arrangement of particles, while amorphous solids lack long-range order.

Previous problemNext problem

Verified step by step guidance

Understand the definitions: Crystalline solids have particles arranged in a highly ordered, repeating pattern extending throughout the material, while amorphous solids lack this long-range order and have a more random arrangement of particles.

Recall physical properties related to structure: Crystalline solids typically have a sharp, fixed melting point because their ordered structure breaks down at a specific temperature, whereas amorphous solids melt over a range of temperatures due to their disordered structure.

Analyze the options given: The statement that crystalline solids can flow easily is incorrect because solids generally do not flow; this property is more characteristic of liquids.

Recognize that both crystalline and amorphous solids do not have identical particle arrangements; this is a fundamental difference between them.

Conclude that the key difference is the presence of a well-ordered, repeating particle arrangement in crystalline solids versus the lack of long-range order in amorphous solids.