How has the Earth's atmosphere changed over time? - OCR 21C

1

How does the particle model help explain why a liquid can flow?

2

What is the name of the change of state where a solid changes straight into a gas?

3

What is the state of hydrogen sulfide at -75°C? Its boiling point is -61°C and its melting point is -85°C.

4

Which of the following provides evidence for the release of oxygen into Earth's early atmosphere?

5

Which of the following results in a decrease in the amount of carbon dioxide in the atmosphere?

6

Which compounds are products of incomplete combustion of a hydrocarbon fuel?

7

What is the test for oxygen?

8

The use of hydrocarbon fuels causes the production of pollutants. Which pollutant is caused by impurities in the fuel?

9

Which of these methods will reduce the emission of sulfur dioxide into the atmosphere?

10

Which of these is a limitation of the particle model? - Higher