Chapter 6 Summary

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CHAPTER 6

Speaking of Molecules

SUMMARY

KEY TERMS

molecular formula

structural formula

isomer

HONC 1234 rule

Lewis dot structure

Lewis dot symbol

bonded pair

lone pair

octet rule

double bond

triple bond

functional group

chemical reaction

synthesis

chemical equation

reactant

product

catalyst

Smells Update

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The investigation into the chemistry of smell has challenged you to explore how molecules are put together. So far you know that the smell of a substance is related to its molecular formula, chemical name, and any functional groups present.

This is based on the data investigated so far. Further investigation may lead you in new directions.

REVIEW EXERCISES

Question 6.1

1. What functional groups are present in each of these molecules?

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Question 6.2

2. Draw the Lewis dot structure and the structural formula for each of these molecules.

  1. SiF4

  2. CO2

  3. CH4

  4. SF2

  5. C2H4

  6. C2H2

  7. C2H6

Question 6.3

3. How many lone pairs are in each of these molecules?

  1. CO2

  2. SiF4

  3. CH4

Question 6.4

4. Draw at least two structural formulas for the molecular formula C3H6O.

Question 6.5

5. From what you’ve learned so far, how is molecular structure related to smell?