Problem 2
What is a hypothesis? Why is it an important part of the way scientists think?
Problem 3
Why are events that happen only once difficult to analyze from a scientific point of view?
Problem 4
What is the scientific method, and what processes does it involve?
Problem 5
How are the second law of thermodynamics and pollution related?
Problem 7
What happens to atoms during a chemical reaction?
Problem 8
State the first and second laws of thermodynamics.
Problem 9
How do solids, liquids, and gases differ from one another at the molecular level?
Problem 10
List five kinds of energy.
