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Atomic Structure and Periodic Table Review Flashcards | StudBud
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Atomic Structure and Periodic Table Review
Atomic Structure and Periodic Table Review
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Review for unit 1 8th grade science test.
Flashcards
20 cards
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Practice quiz
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Host live
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Questions
20
Answers
1
Which subatomic particle determines an atom's reactivity/chemical properties?
(valence) electron
the nucleus
neutron
proton
2
Identify the element: period 3, group 2
Magnesium (Mg)
Calcium (Ca)
Potassium (K)
Beryllium (Be)
3
Where can electrons be found?
packed into the nucleus with protons
sitting still on their energy levels
orbiting the nucleus in energy clouds
rotating within the nucleus
4
Which of the following is incorrect?
protons: positive charge
neutron: negative charge
electron: negative charge
neutron: no charge
5
Identify the element: period 4, group 15
Carbon (C)
Phosphorus (P)
Arsenic (As)
Nitrogen (N)
6
How many neutrons does Bromine have?
35
40
45
80
7
Which of the following correctly describes the nucleus of an atom?
Contains half of the atomic mass
Tightly packed in center containing almost all of the mass
Takes up most of the space in an atom
Contains enough protons and electrons to balance the charge
8
Atom: 40 protons, 35 neutrons, 35 electrons; What's the charge of the nucleus?
0
-5
+40
+5
9
Which subatomic particle can we count to identify an atom?
energy levels
proton
neutron
electron
10
Atom: 30 protons, 25 neutrons, 25 electrons; What's the charge of the atom?
+30
+5
-5
0
11
Which of the following is incorrect?
electron = ~0 amu
proton = ~1 amu
neutron = ~1 amu
neutron = ~0 amu
12
Which of the following best describes a nonmetal?
shiny, good conductor, liquid at room temperature
shiny, malleable, ductile, good conductor
dull, brittle, poor conductor
shiny, brittle, semi-conductor
13
Which of the following is incorrect?
neutron: outside nucleus
neutrons: nucleus
electrons: electron cloud
protons: nucleus
14
Which subatomic particle simply adds mass to an atom?
neutron
proton
electron
electron cloud
15
Which element is represented in the image?
Boron (B)
Calcium (Ca)
Silicon (Si)
Aluminum (Al)
16
How many neutrons does Barium (Ba) have?
81
68.5
56
137
17
Identify the element: 5 energy levels, 7 valence electrons
Krypton (Kr)
Rutherfordium (Rf)
Iodine (I)
Manganese (Mn)
18
Which of the following is
not
a characteristic of metals?
ductile
malleable
shiny
poor conductor
19
Which element is represented in the image?
Magnesium (Mg)
Sodium (Na)
Carbon (C)
Vanadium (V)
20
Identify the element: 2 energy levels, 5 valence electrons
Nitrogen (N)
Beryllium (Be)
Boron (B)
Carbon (C)
