Download SCIENCE: EIGHTH GRADE CRT FIRST QUARTER

Saraland Middle School
3 Quarter End of Quarter Exam Review
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Question
How are electrons in an atom organized?
Which subatomic particles in an atom have a negative
charge?
Which subatomic particles in an atom have a positive charge?
Which subatomic particles in an atom have no charge?
Which subatomic particles are found in the nucleus of an
atom?
Where are electrons located in an atom?
Who was the Greek philosopher responsible for naming the
atom?
Which two subatomic particles have the greatest mass?
An element that is a very reactive gas is most likely a member
H
of which group or period on the periodic table?
Using the periodic table; how is the number of electrons in an
atom determined?
Using the periodic table; how is the number of protons in anBy
atom determined?
Which group of elements does not normally form chemical N
bonds?
Based on the number of valence electrons, which of the
L
following elements is the most reactive: Li, Be, B, Ne?
How many electrons does a nitrogen (N) atom contain?
Y
How many protons does an argon (Ar) atom contain?
How many neutrons does the most commonly occurring form
of a potassium (K) atom contain?
What; are atoms of the same element with different numbers of
neutrons called?
Two isotopes of carbon are carbon-12 and carbon-14. How
do these isotopes differ?
Given a diagram of an element from the periodic table, find
atomic mass.
On the periodic table, what is a column of elements called?
How many elements are in the first period of the periodic
table?
On the periodic table, what is a row of elements is called?
What are Groups 3–12 on the periodic table called?
Determine an element based using the period and the group
number.
What is the name of group 13 on the periodic table?
What is the name of group 18 on the periodic table?
An atom’s identity is determined by which subatomic
particle?
In what period is calcium (Ca) located?
Find the number of protons given the group number and
period.
Which of the following elements are halogens: B, Ge, I, He
What is the smallest particle of an element called that has the
chemical properties of that element?
What type of charge do atoms have?
In energy levels
Electrons
Protons
Neutrons
Protons and Neutrons
In Electron Cloud
Democritus
Protons and Neutrons
Halogen
By atomic number
By atomic number
Nobel Gases
Li
7
18
20
Isotopes
By two neutrons
The atomic mass is the number at the bottom of most
periodic tables
Group or Family
2
Period
Transition Metals
e.g. period 3, group 16 = Sulfur
Boron Group
Nobel Gases
Protons
4
e.g. period 4, group 14 = 32
Iodine
Atom
Neutral
33. What two subatomic particles are used to determine mass
number?
34. What is the smallest subatomic particle of an atom?
35. Given a Bohr diagram of an atom determine the atomic
number.
36. Describe the amount of electrons in the outer energy level of
a noble gas?
37. Why do elements in a family or group in the periodic table
often share similar properties?
38. What element is a gas at room temperature, and has six
electrons in its outer level?
39. Which element has a full outermost energy level containing
only two electrons?
40. How many valence electrons does nitrogen have?
41. Oxygen (O) is in Group 16. How many valence electrons
does oxygen have?
42. Carbon (C) is in Group 14. How many valence electrons
does carbon have?
43. Where are valence electrons located within an atom?
44. Given the classes metals, metalloids, gases and nonmetals,
what class contains the most elements on the periodic table?
45. Where are metalloids located on a periodic table?
46. Which class of elements has no luster, and is a poor conductor?
47. What elements have some properties of metals and nonmetals?
48. Where are the most active metals located on the periodic table?
49. Which elements are transition metals?
50. What nonmetal can exist as diamond, graphite, and charcoal?
51. What nonmetal is located in group 1 of the periodic table?
52. Which pair of atoms can form an ionic bond?
53. What type of bond occurs between oppositely charged ions?
54. What type of bond occurs when the force of attraction is
between the nuclei of atoms and the electrons shared by the
atoms?
55. Determine the correct electron-dot diagram for various
elements.
56. What is the charge of a potassium ion that has 19 protons and
18 electrons?
57. What is the correct formula for sodium chloride?
58. What do atoms gain, lose or share when they bond?
59. What is an atom mostly made of?
60. What does the energy of an electron depend on?
61. If an atom has 8 electrons, how many does it want to become
stable?
62. Is it easier to remove an electron from level k or level m?
63. If an element has 8 electrons, does it abide by the Octet Rule?
64. What is the difference between an anion and a cation?
65. Lewis Dot diagrams represent which part of the atom?
66. How can you tell if C12 is an isotope?
67. Will CH4 form an ionic bond?
68. What type of elements tends to form negative ions in an ionic
compound?
69. If Ca reacts with another element, what type of ion does Ca
form?
70. If Ba reacts with oxygen (O) to form ionic compounds, how
many oxygen atoms are needed for each of these atoms?
Protons and Neutrons
Electrons
Count the positive charges in nucleus or count the electrons
Complete set of 8 electrons
They have the same number of outer level electrons (valence
electrons)
Oxygen
Helium
5
6
4
Outer energy level
Metals
Between the metals and the non-metals
Non-metals
Metalloids
Lower Left
Groups 3-12
Carbon
Hydrogen
Metals with non-metals
Ionic
Covalent
1+
NaCl
Electrons
Empty Space
Proximity of nucleus: closer less energy because of magnetic pull
two
Level M
No; 6 valence electrons
Cations are losers of electrons and have positive charge
Valence Electrons
The Big 12
No; two non-metals
Non-metals
Positive Ion
One