1. When is an electron a valence electron? Why are valence electrons especially important in
A valence electron is an electron in the outer shell that is shared or exchanged in a
1. What is the goal of science?
To understand, predict and allow productive interactions with our physical surroundings.
2. How does science play a role in your everyday life?
Science plays a role in almost every facet of
3. Why was the Ptolemaic system accepted as an explanation of celestial motion for over a thousand
years? What did it explain? What system challenged the idea that Earth was the center of the universe?
3. What observations lead Coulomb to the conclusion that electrical forces were in some ways
similar to the gravitational force discovered by Newton? Compare and contrast the behavior of
an electrical force and gravity.
1. Did Democritus use the scientific method to study the existence of atoms?
No. Democritus relied on rational processes (i.e., philosophical reasoning) rather
than experimental observat
The following slides are from the end of the
Chapter 6 power point that were not shown on
Friday, or today since the projector was out.
visible light with
When light interacts with
matter it may be
4. How has the development of new materials changed the world in which you live? Give examples of
three new materials and the impact they have had on your everyday life.
Many answers are possible.
3. What is the central idea of Einsteins theory of relativity?
Every observer must experience the same natural laws.
4. What is the difference between special and general relativity?
Special relativity deals
2. Identify three characteristics that can be used to describe a wave. How are these three related?
The velocity of a wave is equal to its wavelength multiplied by its fr
2. What is specific heat capacity? Which heats more quickly, a kilogram of water or a kilogram of copper.
The measure of the ability of a material to absorb heat.
Copper, because it has a lower specific heat capa
1. What is the scientific definition of work? How does it differ from ordinary English usage?
Work is done whenever a force is exerted over a distance: W = F x d
The terms work