Mr. Zimmerman’s Chemistry (Ashokan) Unit
Directions: Read the indicated pages from the text Prentice Hall Physical Science and answer the questions which follow. We will have a test on this material.
Describing Matter (Pages 18-23):
1. What is matter according to this text?
______
2. How can you identify a substance?
______
3. What is chemistry?
______
4. All of the different kinds of matter are made up of about ______different kinds of ______.
5. ______are the ______of matter, because all mater is composed of ______.
6. Elements are usually abbreviated with 1 or 2 ______. It has 2 letters, the first letter is a _____ letter, and the second letter is ______letter.
7. What does Al stand for? Where can you find it?
8. What does C stand for? Where can you find it?
9. What does Cu stand for? Where can you find it?
10. What does Au stand for? Where can you find it?
11. What does Fe stand for? Where can you find it?
12. What does O stand for? Where can you find it?
13. A compound is a substance ______
14. Compounds are formed in fixed ratios, what does that mean?
______
15. A ______shows the ratio of ______in a compound.
16. What is the formula for water? ______
17. What is the formula for carbon dioxide? ______
18. Most matter, however, if found as a ______
19. Explain how sand is mixture and not a compound.
______
20. Are mixtures combined in specific ratios like compounds?
______
Changes in Matter
21. Describe a physical change.
______
22. What are the three primary physical states of matter? ______
23. When matter changes from solid, to liquid, or gas: is that a chemical change?
______
24. If you crumble a piece of bread is it a physical or chemical change? ______
25. Describe a chemical change?
______
26. In a chemical change ______are rearranged into new ______
27. In a chemical change, ______may combine to form ______, or compounds may be ______into ______.
28. When you make toast, is that a physical or chemical change? ______
Measuring Matter (pages 24 – 30)
29. Define mass. ______
30. Define weight. ______
31. As you move to the moon, a person’s ______will change; but its ______will ______.
32. Define volume. ______
33. What is the formula for a regularly shaped object? ______
34. 1 ml = ______
35. What is significant about the date AD 789?
______
36. What is significant about the date AD 1714?
______
37. What is significant about the date AD 1983?
______
38. Define density. ______
39. What are the typical units for density? ______
40. If the density of an object is less that 1.0g/cm3, what happens when it is placed in water? ______
41. If the density of an object is more that 1.0g/cm3, what happens when it is placed in water? ______
42. What do you think is the density of wood? ______
43. What do you think is the density of a quarter? ______
44. What is the density of gold? ______What will it do when place in water?
______
45. The density of a particular compound or element is the ______for all samples of that substance.
46. Why can you not say that the density of a mixture is the same for all samples of that substance? ______
Particle of Matter (pages 31 – 35)
47. What is the smallest amount of an element? ______
48. Who was Democritus? ______
49. When did he live? ______
50. What does atomos mean? ______
51. According to Dalton:
· Atoms can not be ______
· In any element, all atoms … ______
· Atoms of different elements are … ______
· Atoms can combine to form… ______
· Atoms of each element have a unique … ______
52. One grain of sand contains more atoms then … ______
53. In one drop of water there are ______atoms of O and ______atoms of H
54. The force that holds two atoms together is a ______.
55. Two or more atoms bonded together is called a ______.
56. How many atoms are in 1 molecule of water H2O? ______
57. How many atoms are in 1 molecule of H2O2 ______
58. How may atoms are in 1 molecule of C6H12O6 ______
Elements from the Earth(pages 36 – 40)
59. What is pyrite? What is it composed of?
60. What was the name of the method that the miners used to separate gold?
61. To obtain an element from its compound, it is necessary to cause a ______.
62. What method is used to separate copper from its ore? ______
63. What method is used to separate iron from its ore? ______
Chapter 1 Assessment
On page 42: Answer questions 1-14; 18, 19, 20 – 22, 23 – 26 on a separate sheet of paper. TO BE GRADED !
Inside the Atom (pages 76-80)
64. What are the names of the particles inside the nucleus of an atom. ______
65. What type of charge do protons have? ______
66. What type of charge do neutrons have? ______
67. What type of charge do electrons have? ______
68. The atomic number represents the number of ______.
69. The number of ______= the number of ______
70. What does AMU stand for? ______
71. The atomic mass of an atom =
______.
72. Can the exact location of an electron be determined? ______Explain !
______
73. The electrons in an atom are not all the same distance away from the nucleus. Those farthest from the nucleus are called ______electrons.
74. When a chemical bond forms between two atoms, when the ______electrons move amongst both atoms.
75. The valence electrons may be ______from one to another atom, or they may be ______between all of the atoms.
76. In an electron dot diagram, each dot represents one ______.
Organizing the Elements (pages 81 – 88)
77. By 1830, how many elements were discovered? ______
78. What were most of these elements? ______
79. Who created the first periodic table? ______
80. What is the atomic number and element name for the following:
Li Na K
Ca Co Cl
Zn Al Pb
81. Why does the periodic table work? (Page 88)
______