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Chemistry 1st Semester Review 1 Flashcards | StudBud
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Chemistry 1st Semester Review 1
Chemistry 1st Semester Review 1
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A #chemistry review of first semester #tennesseechemistry.
Flashcards
15 cards
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Practice quiz
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Questions
15
Answers
1
Which element has the electron configuration 1s
2
2s
2
2p
3
nitrogen
fluorine
phosphorus
boron
2
Which atom in the ground state requires the
least
amount of energy to remove its valence e-?
sodium atom
rubidium atom
lithium atom
potassium atom
3
Which correctly lists four atoms from smallest to largest atomic radii?
I, Br, Cl, F
Si, P, S, Cl
Cl, S, P, Si
F, I, Br, Cl
4
Silver has 47 protons in each atom. Which also describes a neutral atom of silver?
It has no electrons.
It has a total of 94 neutrons and electrons.
It has 47 electrons.
It has 23 neutron and 24 electrons.
5
What is the net charge of an ion that has 8 protons, 9 neutrons, and 10 electrons?
2+
1−
2−
1+
6
Which of the following statements
best
describes the current atomic theory?
Electrons are evenly distributed throughout a mixture.
Electrons move in circular orbits around the nucleus.
Electrons are held in an atom by mutual attraction.
Electrons in energy levels w/ wave & particle properties.
7
Which statement
accurately
compares the masses of two subatomic particles?
Mass of an electron is greater than the mass of a proton.
Mass of an electron is greater than the mass of a neutron.
Mass of a proton is greater than the mass of a neutron.
Mass of a proton is greater than the mass of an electron.
8
What would be the outer electron configuration of halogens?
ns 2 np 7
ns 2 np 6
ns 2 np 4
ns 2 np 5
9
Which element has the electron configuration below? 1s
2
2s
2
2p
6
3s
2
3p
6
3d
10
4s
2
4p
3
As
P
V
Ca
10
Which describes trends in electronegativity & metallic properties for elements in
Period 2?
Both electronegativity and metallic properties increase.
Electronegativity decreases & metallic properties increase.
Both electronegativity and metallic properties decrease.
Electronegativity increases & metallic properties decrease.
11
Which of the following statements
best
explains why potassium reacts easily with bromine?
K has 1 valence e-, & Br needs 1 valence e-.
K & Br have the same # of e- in their highest energy levels.
K & Br both have valence e- in the fourth energy level.
K needs 1 valence e-, & Br has an extra e- to give.
12
The number of electrons in phosphorus is 15. The valence electrons in phosphorus are
8
4
5
2
13
The Lewis symbol for an element was illegible. The Lewis symbol had 6 dots. It's?
Ba
Cr
Ni
Se
14
Which equation correctly represents the first ionization of aluminum?
Al- (g) → Al(g) +e-
Al (g) → Al-(g) +e-
Al (g) + e-→Al-(g)
Al (g) → Al+(g) +e-
15
Which of the following atoms has the largest atomic radius?
chlorine
iodine
magnesium
barium
