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Unit 2D-2F From Stars to Atoms (HS Chemistry) Flashcards | StudBud
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Unit 2D-2F From Stars to Atoms (HS Chemistry)
Unit 2D-2F From Stars to Atoms (HS Chemistry)
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Atomic Structure & Periodic Table Arrangement
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Questions
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Answers
1
What is the family/group name of Be, Mg, Ca, Sr, Ba, Ra? (LT 2F)
alkaline earth metals
alkali metals
halogens
noble gases
2
Which subatomic particle(s) can be
found in the nucleus
? (LT 2D)
protons and electrons
protons only
protons and neutrons
neutrons only
3
Which of the following elements is a metalloid? (LT 2F)
arsenic
chlorine
aluminum
calcium
4
What is the
name of the isotope
for
31
P? (LT 2D)
phosphorus-15
phosphorus-31
potassium-31
gallium-15
5
What is the
mass number (A)
of an element equal to? (LT 2D)
the number of electrons + protons
the number of electrons only
the number of protons + neutrons
the number of protons only
6
Which element would have the SAME number of valence electrons as calcium (Z = 20)? (LT 2F)
zinc
potassium
magnesium
carbon
7
Which subatomic particle arrangement describes the
chemical or physical properties
of elements? (LT 2D)
protons and neutrons
electrons
protons
electrons and protons
8
What is the
atomic number (Z)
of an element equal to? (LT 2D)
the number of electrons + protons
the number of protons + neutrons
the number of electrons only
the number of protons only
9
Which
isotope of calcium
is likely the
most abundant
? (LT 2E)
calcium-39
calcium-40
calcium-20
calcium-42
10
Which of the following is NOT a property of metals? (LT 2F)
good conductors of heat and electricity
come in ALL states (i.e. solid, liquids and gases) at room temperature
have luster (shiny) and reflective of light
malleable (pounded into sheets) and ductile (drawn into wires)
11
What is the
family/group name
of He, Ne, Ar, Kr, Xe, Rn & Og? (LT 2F)
noble gases
alkali metals
alkaline earth metals
halogens
12
Which of the following is a FALSE statement about atomic structure? (LT 2D)
The atom has a tiny massive center called a nucleus
The positive charge is all found at the center of the atom
Atoms are mainly empty space
The nucleus contains electrons with a -1 charge
13
Which two subatomic particles have the
same relative mass of 1 amu
? (LT 2D)
neutron and electron
proton and neutron
proton and electron
all subatomic particles have the same relative mass
14
Which subatomic particle(s) have
equal but opposite charges
, respectively +1 and -1 each? (LT 2D)
protons and electrons
protons and neutrons
neutrons and electrons
electrons and protons
15
Which subatomic particle, if counted,
uniquely identifies
which element an atom belongs to? (LT 2D)
both protons or neutrons
electrons
protons
neutrons
16
What is the family/group name of F, Cl, Br, I , At & Ts? (LT 2F)
alkaline earth metals
alkali metals
noble gases
halogens
17
Which of the following are transition metals? (LT 2F)
zinc, copper, and silver
chlorine, bromine, and iodine
argon, helium, and neon
aluminum, magnesium, and sodium
18
What is the family/group name of Li, Na, K, Rb, Cs, Fr? (LT 2F)
alkali metals
noble gases
halogens
alkaline earth metals
19
Which is your BEST, most FAVORITE class this year? (LT 2F)
Chem
Chem-is-try!!
Chemistry
All of the above!!
20
Which type of elements are found on the "right" side of the periodic table? (LT 2F)
nonmetals
metalloids
transition metals
metals
21
What is the
number of protons, electrons, and neutrons
respectively in an atom of chlorine-35? (LT 2D)
35 p+ , 35 e-, 17 n0
17 p+ , 18 e-, 17 n0
17 p+ , 17 e-, 18 n0
17 p+ , 17 e-, 35 n0
22
Why is the
average atomic mass
of an element a decimal number and not a whole number? Because... (LT 2E)
it includes the electrons mass
it is an estimate
it is the weighted average mass of all natural isotopes
of experimental error
23
By which of the following is the modern periodic table arranged? (LT 2F)
decreasing atomic mass
decreasing valence electrons
increasing atomic number
increasing atomic mass
24
Which of the following is in the SAME PERIOD as oxygen (Z = 8)? (LT 2F)
sulfur
phosphorus
carbon
calcium
