Write a chemical formula for each molecular model. (See Appendix IIA for color codes.) (c)

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Identify the color codes for each atom in the molecular model using Appendix IIA.

Determine the element each color represents: black for carbon (C), gray for hydrogen (H), and red for oxygen (O).

Count the number of each type of atom in the molecular model: 2 carbons (C), 6 hydrogens (H), and 1 oxygen (O).

Write the chemical formula by combining the counted atoms: C2H6O.

Verify the structure and ensure the chemical formula matches the molecular model.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Chemical Symbols and Colors

In molecular models, different colors represent different elements. For example, black typically denotes carbon, gray may represent hydrogen, and red often indicates oxygen. Understanding these color codes is essential for accurately interpreting the molecular structure and writing the corresponding chemical formula.

Molecular Structure

Molecular structure refers to the arrangement of atoms within a molecule, including the types of bonds (single, double, etc.) and the spatial orientation of the atoms. This structure is crucial for determining the chemical formula, as it dictates how many of each type of atom are present and how they are connected.

Writing Chemical Formulas

A chemical formula is a symbolic representation of a molecule, indicating the types and numbers of atoms involved. To write a formula, one must count the atoms of each element in the molecular model and express this information using the appropriate chemical symbols and subscripts, reflecting the molecule's composition.

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