Checking understanding of Earth's atmosphere and material properties (C.7)

5 questions

Assessing knowledge of atmospheric composition and material characteristics.

Questions

1. Which gas makes up about 78% of Earth's atmosphere?
2. The greenhouse effect is caused solely by carbon dioxide.
3. Which material is most suitable for constructing a container to store liquid nitrogen at -196°C?
4. What is the primary reason that the ozone layer absorbs ultraviolet (UV) radiation?
5. Which of the following best describes the difference between a physical change and a chemical change?