Module 1 Intro
1. Module 1 Intro
1.7. Lesson 2 Intro
Module 1—Chemical Foundations
Lesson 2—Elements and Ions
Get Focused
Earth’s crust is composed mainly of oxygen. The oxygen found in the crust is not in gaseous form as it is in the atmosphere. Instead, oxygen is a component found in solid compounds, such as rocks and minerals. Oxygen, like many elements, can exist in different forms. How does the structure of atoms differ when atoms of the same element have different forms? In this lesson you will review and extend your understanding of models of the atom and look at how these models are used to explain the different forms in which matter can exist. You will also see how these models relate to the availability of uranium, which is the energy source for nuclear reactors.
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Components of Earth’s Crust |
|
|---|---|
| oxygen | 45.2% |
| silicon | 27.2% |
| aluminium | 8.0% |
| iron | 5.8% |
| calcium | 5.1% |
| magnesium | 2.8% |
| sodium | 2.3% |
| potassium | 1.7% |
| other elements | 1.9% |
Essential Questions
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Can you remember how to identify elements and ions?
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How does scientific knowledge develop through hypothesizing, investigating, and collecting evidence?
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How do the observations and experimental work of many individuals lead to modern understandings of matter?
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Do theories develop as a result of many scientists sharing ideas?
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What role does evidence have in the development of the atomic model?
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Why is it important to have a questioning attitude and a desire to understand more about matter?
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How have Canadians contributed to nuclear research?
Module 1: Lesson 2 Assignments
In this lesson you will complete the Lesson 2 Assignment. You will also continue to work on your module project.
Save a copy of the Lesson 2 Assignment to your course folder. You will receive more information about how to complete the assignment later in this lesson.
You must decide what to do with the questions that are not marked by the teacher.
Remember that these questions provide you with the practice and feedback that you need to successfully complete this course. You should respond to all the questions and place those answers in your course folder.