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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
23 cards
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Practice quiz
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Questions
23
Answers
1
Where can electrons be found?
orbiting the nucleus in energy clouds
packed into the nucleus with protons
sitting still on their energy levels
rotating within the nucleus
2
Identify the element: 2 energy levels, 5 valence electrons
Beryllium (Be)
Nitrogen (N)
Boron (B)
Carbon (C)
3
Atom: 40 protons, 35 neutrons, 35 electrons; What's the charge of the nucleus?
+40
0
+5
-5
4
Which subatomic particle can we count to identify an atom?
energy levels
electron
proton
neutron
5
Identify the element: period 3, group 2
Calcium (Ca)
Magnesium (Mg)
Beryllium (Be)
Potassium (K)
6
Which of the following is incorrect?
electrons: electron cloud
neutrons: nucleus
neutron: outside nucleus
protons: nucleus
7
Which subatomic particle determines an atom's reactivity/chemical properties?
the nucleus
neutron
(valence) electron
proton
8
Which of the following is
not
a characteristic of metals?
shiny
ductile
malleable
poor conductor
9
Which subatomic particle simply adds mass to an atom?
electron cloud
proton
neutron
electron
10
Which of the following is incorrect?
neutron: no charge
electron: negative charge
protons: positive charge
neutron: negative charge
11
Atom: 30 protons, 25 neutrons, 25 electrons; What's the charge of the atom?
0
+5
+30
-5
12
Which element is represented in the image?
Magnesium (Mg)
Carbon (C)
Sodium (Na)
Vanadium (V)
13
Which of the following correctly describes the nucleus of an atom?
Tightly packed in center containing almost all of the mass
Contains half of the atomic mass
Contains enough protons and electrons to balance the charge
Takes up most of the space in an atom
14
Which of the following is incorrect?
neutron = ~0 amu
proton = ~1 amu
neutron = ~1 amu
electron = ~0 amu
15
Which of the following best describes a nonmetal?
shiny, malleable, ductile, good conductor
shiny, brittle, semi-conductor
dull, brittle, poor conductor
shiny, good conductor, liquid at room temperature
16
Which element will have similar chemical properties to Silicon (Si)?
Carbon (C)
Oxygen (O)
Nitrogen (N)
Phosphorus (P)
17
Which element will have similar reactivity as Helium (He)?
Oxygen (O)
Nitrogen (N)
Chlorine (Cl)
Neon (Ne)
18
All elements touch the zigzag line are metalloids except:
Al & Po
Ge & Sb
H & He
B & At
19
Identify the element: period 4, group 15
Nitrogen (N)
Phosphorus (P)
Arsenic (As)
Carbon (C)
20
Which element is represented in the image?
Silicon (Si)
Boron (B)
Aluminum (Al)
Calcium (Ca)
21
How many neutrons does Bromine have?
45
35
80
40
22
Identify the element: 5 energy levels, 7 valence electrons
Rutherfordium (Rf)
Krypton (Kr)
Iodine (I)
Manganese (Mn)
23
How many neutrons does Barium (Ba) have?
137
68.5
56
81
