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O'Connor Atoms, Elements and the Periodic Table Flashcards | StudBud
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O'Connor Atoms, Elements and the Periodic Table
O'Connor Atoms, Elements and the Periodic Table
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Answers
1
Alkali metals have the property of being
they are stored in water
generally unreactive
so hard they can not be cut
very reactive
2
Element Q has 15 protons, 15 electrons, and 20 neutrons. Which is true about the element?
it has an atomic number of 20
Element Q has an atomic mass of 30
element Q is most likely Nitrogen
it has an atomic mass of 35
3
Which subatomic particle is matched correctly with its properties.
electron; negatively charged particle with an amu of 1
electron; mass about the same as a neutron, negative charge
proton; neutral charge with an amu of zero
proton; positive charge, amu about the same as neutron
4
The top number is the _______
atomic mass
atomic number
element name
number of neutrons
5
How many valence electrons does Nitrogen have?
2
6
7
5
6
Nitrogen-16 has how many neutrons?
23
7
16
9
7
Oxygen and Sulfur are in the same family on the periodic table. Which of the following is true?
They are on th esame row of the periodic table
they are both noble gases
they both have the same number of valence electrons
they both have the same number of energy levels
8
Nitrogen-16 has how many protons
16
8
9
7
9
Noble gases are found
at the far left of the periodic table
starting with Fluorine going down the group
along my zig zag line
at the far right of the periodic table
10
All of the elements in a family share the same number of _____
protons
energy levels
electrons
valence elctrons
11
I am an element with 13 electrons and 20 neutrons and 13 protons, what is my atomic mass
33
20
26
13
12
the characteristics of atoms that determine an elements reactivity depend on
the number of neutrons
the number of valence electrons
the number of protons
whether or not it is an isotope
13
What do we call the left to right "rows" on the periodic table?
periods
rows
families
groups
14
atomic number - atomic mass gives me the number of _________
nothing you fool its backwards
neutrons
protons
electrons
15
Hydrogen is a non metal in the first family. Why?
Hydrogen only has 1 valence electron
it makes the periodic table look prettier to look at.
Hydrogen behaves like a metal b/c it conducts electricity
Hydrogen is a solid at room temperature
16
electrons are organized around an atom on ____________
nucleus strings
periods
groups
energy levels or shells
17
vertical columns on my periodic table are better known as
periods
families
groups
families or groups
18
valence electrons can best be defined as
the number of electrons that start with the letter e
the total number of electrons
the number of electrons on the inner most shell
the number of electrons on the outer most shell
19
How many valence electrons does magnesium have?
2
8
12
1
20
characteristic of alkali metals is that they
have 2 valence electrons in their outer shell
are extremely reactive
are poor conductors of electricity
are mostly gas at room temperature
21
most non metals are
found on the left side of the periodic table
excellent conductors
liquids at room temperature
brittle if solid
22
properties of metals include all of the following except
good conductors of electric current
malleable
solid at room temperature
dull
23
protons have a ______ charge, neutrons have a ______ charge and electrons have a _______ charge
-, +, neutral
+,-, neutral
+, neutral, +
+, neutral, -
24
The noble gases are unique because
the family is composed of metals, nonmetals, and metalloids
they have full valence shells at 8
they are great conductors of electricity but not heat
they are the only family that has incest.
25
Which of the following is an isotope of Neon different than the most common on the periodic table?
atom with 10 protons, 10 neutrons, 10 electrons
atom with 12 protons, 10 neutrons, 12 electrons
atom with 10 protons, 12 neutrons, 10 electrons
atom with 10 protons, 10 neutrons, and 12 electrons
26
in an atom most of my mass is located in
my electron cloud
my nucleus
my protons
spread evenly throughout the atom
27
Which pair of elements below is most likely chemically reactive?
carbon and neon
Xenon and Helium
Sodium and Potassium
Potassium and Bromine
28
Which element is most chemically similar to Lithium?
Magnesium
Potassium
Beryllium
Neon
29
The elements along my zig zag line are known as
metals
optimus primes
metalloids
non-metals
30
atomic mass - atomic number gives me ____________
electrons
neutrons
protons
falcons
31
Isotopes have the same number of __________ and a different number of ___________
protons, neutorn
neutrons, protons
neutrons, electrons
protons, electrons
32
characteristic of halogens are that they
are good conductors of heat and electricity
are extremely unreactive
have 7 valence electrons
are all gases at room temperature
33
the atomic number relates the
# of electrons
# of protons and the # of electrons
# of neutrons
# of protons
34
Helium has how many valence electrons
8
yes
2
18
35
A given element has an atomic number of 42, which is true about that element?
there are two possible correct answer
it has 42 protons
it has 42 electrons
it has 42 neutrons
