Problem 1
According to the Greek philosopher Thales in 600 B.C., what single element composed earth, air, and space?
Problem 2
According to ancient Chinese beliefs, what two forces were responsible for bringing the earthly world into existence?
Problem 3
According to the Greek philosopher Aristotle in 350 ?.C., what five basic elements composed everything in nature?
Problem 4
According to the Greek philosopher Empedocles in 450 B.C, what four basic elements composed everything in nature?
Problem 5
Who is considered the founder of the scientific method?
Problem 7
What is the second step in the scientific method?
Problem 9
What is the difference between a hypothesis and a theory?
Problem 10
What is the difference between a scientific theory and a natural law?
Problem 11
Which of the following statements is a scientific theory? (a) The energy in an atomic nucleus is found by \(E=m c^{2}\). (b) There is the same number of molecules in equal volumes of gases. (c) If the temperature of a gas doubles, the pressure doubles. (d) The region surrounding the nucleus of an atom contains electrons.
Problem 12
Which of the following statements is a natural law? (a) The total mass of reacting substances remains constant after reaction. (b) The total energy of two gas molecules remains constant after colliding. (c) The volumes of two gases combine in the ratio of small whole numbers. (d) The nucleus of an atom contains protons and neutrons.
