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1. Matter and Measurements(434)
2. Atoms and the Periodic Table(698)
3. Ionic Compounds(279)
4. Molecular Compounds(334)
5. Classification & Balancing of Chemical Reactions(274)
6. Chemical Reactions & Quantities(172)
7. Energy, Rate and Equilibrium(339)
8. Gases, Liquids and Solids(282)
9. Solutions(400)
10. Acids and Bases(301)
11. Nuclear Chemistry(165)
BONUS: Lab Techniques and Procedures(136)
BONUS: Mathematical Operations and Functions(99)
12. Introduction to Organic Chemistry(230)
13. Alkenes, Alkynes, and Aromatic Compounds(288)
14. Compounds with Oxygen or Sulfur(159)
15. Aldehydes and Ketones(121)
16. Carboxylic Acids and Their Derivatives(190)
17. Amines(109)
18. Amino Acids and Proteins(239)
19. Enzymes(193)
20. Carbohydrates(288)
21. The Generation of Biochemical Energy(239)
22. Carbohydrate Metabolism(177)
23. Lipids(264)
24. Lipid Metabolism(178)
25. Protein and Amino Acid Metabolism(138)
26. Nucleic Acids and Protein Synthesis(371)

4. Molecular Compounds

Molecular Models

4. Molecular Compounds

Molecular Models: Videos & Practice Problems

Video Lessons Practice Worksheet

Molecular Models Practice Problems

20 problems

1PRACTICE PROBLEM

The given diagram illustrates a gaseous chemical reaction, where gray spheres denote carbon atoms, and red spheres denote oxygen atoms. Provide the molecular formula of the reactants and products.

Diagram showing gray spheres as carbon and red spheres as oxygen in a gaseous reaction.

views

2PRACTICE PROBLEM

The diagram below shows a chemical reaction where blue spheres represent nitrogen atoms and yellow spheres represent fluorine atoms. Provide the molecular formula for the reactants and products, assuming all molecules are in the gaseous state.

Diagram showing nitrogen and fluorine molecules in a chemical reaction.

3PRACTICE PROBLEM

Draw the structure that represents the three-dimensional shape of silicon tetrachloride, SiCl₄.

4PRACTICE PROBLEM

Identify the molecular formula of the compound given the model below:

3D molecular model showing atoms: blue for nitrogen, red for oxygen, grey for carbon, white for hydrogen. .

Legend:

N → blue

O → red

C → grey

H → white

5PRACTICE PROBLEM

What is the primary purpose of molecular models in chemistry?

6PRACTICE PROBLEM

Which color is commonly used to represent carbon in molecular models?

7PRACTICE PROBLEM

You are given a molecular model with balls colored red, black, white, and blue. Which elements are represented by these colors?

8PRACTICE PROBLEM

How do molecular models aid in understanding the concept of chemical bonding?

9PRACTICE PROBLEM

Which of the following is a limitation of using color-coded molecular models?

10PRACTICE PROBLEM

Using molecular models, predict the molecular formula for a compound consisting of two hydrogen atoms and one oxygen atom.

11PRACTICE PROBLEM

Which real-world chemical phenomenon can be explained by the interaction of molecular models representing sodium (Na) and chlorine (Cl)?

12PRACTICE PROBLEM

In molecular models, what color is used to represent hydrogen?

13PRACTICE PROBLEM

Why are color-coded balls used in molecular models?

14PRACTICE PROBLEM

What is a common limitation of the size representation in molecular models?

15PRACTICE PROBLEM

Explain how molecular models can be used to demonstrate the chemical reaction between hydrogen and oxygen to form water.

16PRACTICE PROBLEM

Which aspect of molecular models can be considered most effective in teaching chemical structure?

17PRACTICE PROBLEM

Which color represents oxygen in molecular models?

18PRACTICE PROBLEM

Why do the size differences in molecular models not affect chemical representation?

19PRACTICE PROBLEM

If a molecular model shows one sulfur atom bonded to two oxygen atoms, what is the molecular formula of the compound?

20PRACTICE PROBLEM

In what way do molecular models provide insight into the spatial arrangement of molecules?

Naming Binary Molecular Compounds Practice Problems Bonding Preferences Practice Problems

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