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Chemistry: Atomic structure and the periodic table Flashcards | StudBud
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Chemistry: Atomic structure and the periodic table
Chemistry: Atomic structure and the periodic table
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Chemistry semester 1 review
Flashcards
45 cards
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Practice quiz
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Host live
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Questions
45
Answers
1
Which has the largest atomic radius?
silicon
sulfur
aluminum
phosphorus
2
The number of protons and neutrons is represented by the _______________
mass number
ionic charge
atomic mass
atomic number
3
Metals ________________
lose electrons
gain electrons
are part of Boyle's law
form covalent bonds
4
Which is an accurate ion?
Na2+
O2+
F+
Ca2+
5
Electronegativity is ________________
energy to remove electrons
energy to expand an atom
tendency to attract electrons
desire to release electrons
6
Isotopes have a different number of
neutrons
electrons
atoms
energy levels
7
Which is NOT a noble gas?
helium
neon
hydrogen
xenon
8
How many groups are on the periodic table?
7
118
18
8
9
Ionization energy decreases down a group due to
less protons
electron shielding
less valence electrons
more protons
10
The unit for atomic mass is __________
moles
atoms
amu
grams
11
Which is a synthetic element?
sodium
radon
astatine
tennessine
12
Lewis dot structures show
valence electrons
total protons
total electrons
excited electrons
13
Which electron configuration ends in the 2s orbital?
helium
oxygen
beryllium
calcium
14
Electronegativity_________________
is the same as ionization energy
increases down a group
decreases down a group
is equal for all elements
15
Any atom that gains or loses an electron is called ____________
a covalent bond
an isotope
a compound
an ion
16
Going across a period left to right
Atomic radius increases
Ionization energy decreases
Atomic radius decreases
Metallic character increases
17
As we move down a group
Electronegativity increases
There are more electron shields
Properties change drastically
Atomic radius decreases
18
Which element has the smallest atomic radius?
francium
radon
neon
lithium
19
Which law says electrons fill the orbitals of lowest energy first?
Heisenberg Uncertainty Principle
Hund's Rule
Pauli Exclusion Principle
Aufbau Principle
20
Isotopes have a different number of
protons
electrons
valence electrons
neutrons
21
Electron affinity is
the force of electrons repelling
the energy change when an atom loses an electron
the same as effective nuclear charge
the energy change when an atom gains an electron
22
How many neutrons are in ytrrium-90?
49.91
51
88.91
90
23
Which is made of molecules?
copper
salt
neon
sodium
24
Excited electrons
Are always excited
Are used in bonding
Leave to form ions
Jump to a higher orbital
25
When magnesium becomes an ion
it gains two electrons
it loses protons
its radius increases
it gets a 2+ charge
26
What experiment showed positive and negative parts of an atom?
cathode ray
cutting atoms up
quantum model
gold foil
27
Which elements are found along the stairstep line?
metalloids
nonmetals
halogens
transition metals
28
How many neutrons are in potassium - 39?
39
20
19
58
29
Which group is most likely to form 1+ ions?
alkali metals
halogens
alkaline earth metals
nobel gases
30
Which is an alkali metal?
Na
Mg
Ne
Ni
31
In our flame lab, color was produced by
Neutrons
Protons
Excited electrons
Ground state electrons
32
What ion will magnesium likely form?
2-
no ion
1+
2+
33
How many valence electrons does boron have?
7
2
5
3
34
Which has the highest electronegativity?
aluminum
phosphorus
silicon
sulfur
35
Nobles gases ___________________
Are found in group 17
All have a full outer shell of electrons
form positive ions
All have 8 valence electrons
36
Which ion would nitrogen form?
2-
3+
3-
5+
37
The Plum Pudding model contained electrons, but the Bohr model
Showed electrons in the nucleus
Showed the electrons in specific orbits
Did not contain electrons
Measured the mass of electrons to be the same as protons
38
The quantum orbital that can hold 10 electrons is
s
d
f
p
39
Which is a metalloid?
arsenic
gold
sulfur
manganese
40
Which is an example of ductility?
stretching copper into wire
carbon crumbling easily
sodium reacting violently with water
mercury melting at a low temperature
41
Which is a halogen?
francium
carbon
chlorine
potassium
42
Which is an accurate ion?
Kr+
Br+
Li +
Ca +
43
Which element has the highest ionization energy?
He
Xe
H
Fr
44
More electron shielding______________
Prevents electrons from bonding
Makes electrons smaller
Increases electronegativity
Decreases ionization energy
45
Which materials have good luster?
noble gases
metals
halogens
nonmetals
