1. Module 1 Intro

1.22. Page 4

Module 1: Lesson 4

Module 1—Chemical Foundations

Reflect on the Big Picture

 

Assessment

 

Complete the questions below as the fourth part of your module project. As you have found in the other lessons, these questions allow you an opportunity to consider the concepts you have learned in this lesson, but within a different context. Save a copy of your answers to your course folder. For more information about the module project, refer to the Module Summary and Assessment section for this module.

 

radiation: energy released or transmitted in the form of rays, waves, or particles

One of the greatest concerns about the use of nuclear power is possible exposure to ionizing radiation. For the final piece of research for your project, you will need to learn more about ionizing radiation. Your research should find answers to the following questions:

  • What kind of radiation is classified as ionizing radiation?
  • What effect does ionizing radiation have on water?
  • Why is there concern about changes to matter as a result of exposure to ionizing radiation?
Lesson Summary

 

Reflect on the critical questions asked at the beginning of this lesson:

  • From Science 10, can you recall the principles for assigning names to molecular substances?

  • How does the difference in electronegativity within a compound affect bonding?

Molecular elements and molecular compounds can be found in any state at SATP and, if they are soluble in water, they do not form conducting solutions. You reviewed the principles for naming molecular compounds using the prefix system and recognized that the names of some common molecular compounds have to be memorized. You also reviewed how to write formulas for molecular elements and compounds. You learned that molecular compounds result from two or more atoms sharing electrons. You also discussed electronegativity and how the difference in electronegativity between two atoms influences the characteristics of the bond between the atoms (e.g., ionic, polar covalent, or non-polar covalent).

 

Lesson Glossary

 

molecule: an entity consisting of a group of non-metal atoms held together by covalent bonds

 

radiation: energy released or transmitted in the form of rays, waves, or particles