1.Explain what is Chemistry?
2. Name six branches chemistry.
3. Compare and contrast basic research, applied research, and technological development.
4. Scientific and technological advances are constantly changing how people live and work.
5. Discuss a change you have observed in your lifetime that has made life easier or more enjoyable for you.
1. What is the main difference between physical properties and chemical properties? Give an example of each.
2. Classify each of the following as either a physical change or a chemical change.
a. tearing a sheet of paper b. melting a piece of wax c. burning a log
Which elements are most likely to undergo the same kinds of reactions, those in a group or those in a period?
Describe the main differences between metals, nonmetals, and metalloids.
If you find an element in nature in its pure elemental state, what can you infer about the element’s chemical reactivity? How can you tell whether that element is a metal or a nonmetal?