1. CHEMISTRY November 20, 2014
REVIEW

2. You are seated and silent You have 7 minutes Do the SCIENCE STARTER

3. REVIEW

4. PHYSICAL BEHAVIORS OF MATTERS

5. PB1 Which substance can not be broken down by chemical means? Ammonia
Antimony
Methane
Water

6. PB2 Which substance can not be broken down by a chemical change?
Methane
Propanal
Tungsten
Water

7. PB3 Which substance can NOT be broken down by a chemical change?
Ammonia
Ethanol
Propanal
Zirconium

8. PB4
Two grams of potassium chloride are completely dissolved in a sample of water in a beaker. This solution is classified as
An element
A compound
A homogeneous mixture
A heterogeneous mixture

9. PB5 Salt water is classified as a
Compound because the proportion of its atoms is fixed
Compound because the proportion of its atoms can vary
Mixture because the proportion of its components is fixed
Mixture because the proportion of its component can vary

10. PB6 A substance is classified as either an element or a Compound
Solution
Heterogeneous mixture
Homogeneous mixture

11. PB7
Which diagram represents a mixture of two different molecular forms of the same element?
A B C D

12. PB8 A gas changes directly to a solid during Fusion Deposition
Saponification
Decomposition

13. SUBATOMIC PARTICLES

14. SP1 In an atom of argon-40, the number of protons
Equals the number of electrons
Equals the number of neutrons
Is less than the number of electrons
Is greater than the number of electrons

15. SB2 Which statement matches a subatomic particle with its charge?
A neutron has a negative charge
A proton has a negative charge
A neutron has no charge
A proton has no charge

16. SB3 Which statement compares the masses of two subatomic particles?
The mass of an electron is greater than the mass of a proton
The mass of an electron is greater than the mass of a neutron
The mass of a proton is greater than the mass of an electron
The mass of a proton is greater than the mass of a neutron

17. SB4
Which subatomic particles are located in the nucleus of an He-4 atom?
Electrons and neutrons
Electrons and protons
Neutrons and protons
Neutrons, protons, and electrons

18. SB5 Which particles have approximately the same mass?
An electron and an alpha particle
An electron and a proton
A neutron and an alpha particle
A neutron and a proton

19. SB6
The greatest composition by mass in an atom of O-17 (8) is due to the total mass of its
Electrons
Neutrons
Positrons
Protons

20. SB7 Which quantity can vary among atoms of the same element?
Mass number
Atomic number
Number of protons
Number of electrons

21. SB8 What is the approximate mass of a proton? 1 u 0.0005 u 1 g

22. SB9 Which quantity represents the number of protons in an atom?
Atomic number
Oxidation number
Number of neutrons
Number of valence electrons

23. SB10 Compared to the charge of a proton, the charge of an electron has
A greater magnitude and the same sign
A greater magnitude and the opposite sign
The same magnitude and the same sign
The same magnitude and the opposite sign

24. SB11 Which phrase describes an atom?
A negatively charged nucleus surrounded by positively charged protons
A negatively charged nucleus surrounded by positively charged electrons
A negatively charged nucleus surrounded by negatively charged protons
A positively charged nucleus surrounded by negatively charged electrons

25. SB12
Which statement about one atom of an element identifies the element?
The atom has 1 proton.
The atom has 2 neutrons.
The sum of the number of protons and neutrons in the atom is 3
The difference between the number of neutrons and protons in the atom is 1

26. SB13 The mass of a proton is approximately equal to the mass of
An alpha particle
A beta particle
A positron
A neutron

27. SB14 Every chlorine atom has 7 electrons 17 neutrons
A mass number of 35
An atomic number of 17

28. SB15
An atom in the ground state has two electrons in its first shell and six electrons in its second shell. What is the total number of protons in the nucleus of this atoms? 5 2 7 8

29. SB16
What is the charge of the nucleus of an oxygen? -2 +8
+16

30. ATOMIC MODEL

31. AM1
An orbital is a region of space where there is a high probability of finding
A proton
A positron
A neutron
An electron

32. AM2
In the late 1800s, experiments using cathode ray tube led to the discovery of the
Electron
Neutron
Positron
Proton

33. AM3
According to the wave-mechanical model of the model, an orbital is a region of the most probable location of
An alpha particle
A gamma ray
An electron
A proton

34. AM4 In the wave-mechanical model of the atom, an orbital is defined as
A region of the most probable proton location
A region of the most probable electron location
A circular path traveled by a proton around the nucleus
A circular path traveled by an electron around the nucleus

35. AM5
The gold foil experiment led to the conclusion that each atom in the foil was composed mostly of empty space because most alpha particles directed at the foil
Passed through the foil
Remained trapped in the foil
Were deflected by the nuclei in gold atoms
Were deflected by the electrons in gold atoms

36. AM6 An orbital is defined as a region of the most probable location of
An electron
A neutron
A nucleus
A proton

37. ISOTOPES

38. I1
What information is necessary to determine the atomic mass of the element chlorine?
The atomic mass of each artificially produced isotope of chlorine, only
The relative abundance of each naturally occurring isotope of chlorine only
The atomic mass and the relative abundance of each naturally occurring isotope of chlorine
The atomic mass and the relative abundance of each naturally occurring and artificially produced isotope of chlorine

39. I2
What is the total number of neutrons in an atom of O-18? 18 16 10 8

40. I3
The atomic mass of titanium is atomic mass units. This atomic mass represents the
Total mass of all the protons and neutrons in an atom of Ti
Total mass of all the protons, neutrons and electrons in an atom of Ti
Weighted average mass of the most abundant isotope of Ti
Weighted average mass of all the naturally occurring isotopes of Ti

41. I4 Which notations represent different isotopes of the element sodium?
32S and 34S
S2- and S6+
Na+ and Na0
22Na and 23Na

42. I5
An atom that has 13 protons and 15 neutrons is an isotope of the element
Nickel
Silicon
Aluminum
Phosphorus

43. I6
The atomic masses and the natural abundances of the two naturally occurring isotopes of lithium are shown in the table below:
Which numerical setup can be used to determine the atomic mass of lithium?
(0.075)(6.02 u) + (0.925)(7.02 u)
(0.925)(6.02 u) + (0.075)(7.02 u)
(7.5)(6.02 u) + (92.5)(7.02 u)
(92.6=5)(6.02 u) + (7.5)(7.02 u)

44. I7
The total number of protons, electrons and neutrons in each of four different atoms are shown in the table below. Which two atoms are isotopes of the same element?
Atom
Total Number of Protons
Total Number of Electrons
Total Number of Neutrons A 5 7 D 6 8 X Z 9
A and D
A and Z
X and D
X and Z

45. ELECTRONS

46. E1
Which electron configuration represents the electrons of a chlorine (Cl) atom in a ground state?
1-8-8
2-8-8
2-7-8
2-8-7

47. E2
Which electron configuration represents a bromine (Br) atom in an excited state?

48. E3
An electron in a silver atom moves from the third shell to the fourth shell. This change is a result of
Absorbing energy
Releasing energy
Gaining an electron
Losing an electron

49. E4
When an excited electron in an atom moves to the ground state, the electron
Absorbs energy as it moves to a higher energy state
Absorbs energy as it moves to a lower energy state
Emits energy as it moves to a higher energy state
Emits energy as it moves to a lower energy state

50. E5 The bright-line spectrum of copper is produced when energy is
Absorbed as electrons move from higher to lower electron shells
Absorbed as electrons move from lower to higher electron shells
Released as electrons move from higher to lower electron shells
Released as electrons move from lower to higher electron shells

51. E6
During a flame test, a lithium salt produces a characteristic red flame. This red color is produced when electrons in excited lithium atoms
Are lost by the atoms
Are gained by the atoms
Return to lower energy states within the atoms
Move to higher energy states within the atoms

52. E7
What must occur when an electron in an atom returns from a higher energy state to a lower energy state?
A specific amount of energy is released.
A random amount of energy is released.
The atom undergoes transmutation.
The atom spontaneously decays

53. E8
Which element is NOT present in the mixture? A D X Z
The diagram below represents the bright-line spectra of four elements and a bright-line spectrum produced by a mixture of three of these elements.

54. E9
Compared to the energy and charge of the electrons in the first shell of a Be atom, the electrons in the second shell of this atom have
Less energy and the same charge
Less energy and a different charge
More energy and the same charge
More energy and a different charge

55. E10A
An atom in an excited state has an electron configuration of 2-7-6
Explain, in term of subatomic particles why this excited atom is electrically neutral.

56. E10B
Write the electron configuration of this atom in the ground state.

57. ANNOUNCEMENT
MIDTERM – FRIDAY (TOMORROW)

58. AGENDA
THE SCIENCE STARTER
R.A.C.E

59. ASSIGNMENTS
SPEND THE REST OF THE TIME COMPLETING ANY MISSING WORKS.
LABS (3)
HOMEWORK (PAPER AND ONLINE)
MAKEUP QUIZES
WRITING ASSIGNMENT

60. AIM
How does RACE help you provide a solid evidence-based response?

61. R.A.C.E R: Restate the question/writing prompt using key words
A: Assertion – what is your answer to the prompt?
C: Citation- cite the evidence that proves your answer from the text. This should be a direct quote from the book
E: Explain: Explain how the quote answer the question/prompt with your own words and brings closure to the response

62. EXAMPLE WRITING
The goal of the main character, Brian, in Hatchet is to go see his dad in the Canadian wilderness for summer vacation. It says in the story on page 7, “So this first summer when he was allowed to have “visitation rights” with his father, …, Brian was heading north.” This part was about Brian flying in a Cessna plane to go spend the summer with his father in the Canadian wilderness which is his goal in the story.

63. WRITING PROMPT
Compare Oxygen-16 to Oxygen-18 (Include the words isotopes and neutrons).

64. Restate/Assertion Oxygen-16 and Oxygen-18 are similar
Oxygen-16 and Oxygen-18 are different
Since Oxygen-16 and Oxygen-18 are

65. Cite As stated in the article, As can be seen in the text,
Line 5 of paragraph 2 states

66. Explain
Therefore,
Hence,
As a result,
The evidence clearly supports

67. Restate/Assertion = Claim Cite = Evidence Explain = Justify
COMPARISON
Restate/Assertion = Claim
Cite = Evidence
Explain = Justify