Honors Chemistry I Chapter 1 Reading Questions Name

Number

Directions: Answer the following questions on a separate sheet of paper using complete sentences.

Chapter 1 Section 1

1. What is chemistry?
2. What is a chemical?
3. Name 2 natural chemicals.
4. Name 2 manufactured chemicals.
5. How do you depend on chemicals in your everyday life?
6. What is a chemical reaction?
7. What is the most produced chemical made in the US?
8. What is matter made of? Can you name them? (Not in this chapter)
9. What determines the properties of matter?
10. What are the 3 states of matter? Can you find the names of the other two?
11. Distinguish between macroscopic and microscopic.
12. Describe the properties of the 3 physical states.
13. Distinguish between physical and chemical changes in matter.
14. The raw materials of a reaction are the ___________.
15. The finished materials of a reaction are the _____________.
16. Name 4 evidences of a chemical change.

Chapter 1 section 3

17. What is a pure substance?
18. Pure substances that consist of only one kind of atom are called ______
19. Elements that exist as single atoms are called ____________.
20. Define a molecule.
21. A molecule of two or more atoms that are identical is called ______.
22. Name these 7 elements that exist as pairs.
23. The different forms that an element can exist in are called an _______.
24. __________ are composed of more than one kind of atom.
25. What is a chemical formula?
26. What are subscripts?
27. Distinguish between molecular/structural formulas and the ball & stick/ space-filling models.
28. What is a mixture?
29. What is an alloy?
30. Distinguish between heterogeneous and homogeneous mixtures.
31. How can you distinguish a mixture and a compound?
32. Name 3 methods chemist use to separate mixtures.

Chapter 2 Section 1

33. Define energy.
34. Define physical and chemical changes and give example of each.
35. What is the Law of Conservation of Energy?