Chemistry 12

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Nature of Matter

In its simplest terms, matter has mass and occupies space. It would be reasonable to call matter “the stuff” which the universe is made up of. Chemistry students become progressively familiar with the atomic nature of matter and the variety of elements and compounds made from them. The states of matter, along with physical and chemical properties – as well as the changing from one state to another – these concepts are among the central themes chemistry students learn regarding matter.

Lesson 1 (or “Day 1”) Material
Lesson 2 (or “Day 2”) Material
Lesson 3 (or “Day 3”) Material
Lesson 4 (or “Day 4”) Material


5:08 Matter: An Introduction

3:36 Physics – Are Mass and Weight the same thing?

1:01 Difference Between Weight and Mass



Compare Contrast and Debate

Background: While the US science community has adopted SI standards, many portions of every-day life in the US continue to use the Imperial System of measurement (such as the ounce, the mile, and the gallon). The cost of converting (road signs, for example) would be expensive – and many older citizens (especially) are comfortable with the traditional units of measure.

  • Position A: Even though it would be expensive, the US should adopt the same SI units of measure as the industrialized world.
  • Position B: While SI units of measure make sense in science, there is no need to change this for daily living.

Resources Documents and Links

Notes and Notices