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Periodic Table Flashcards | StudBud
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Periodic Table
Periodic Table
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atoms and the periodic table
Flashcards
28 cards
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Questions
28
Answers
1
_____________ are the best conductor of electricity.
Metalloids
Metals
Nonmetals
2
A __________ is a chemical combination of two or more elements.
atom
isotope
compound
3
Which of the following statements is true about the Periodic Table?
Most of these elements are metals.
Most of the elements are Noble Gases.
Most of these elements are nonmetals.
Most of these elements are metalloids.
4
An atom with the same number of protons, but a different number of NEUTRONS is a _____.
isotope
ion
new element
5
Elements are arranged by ____________ in the periodic table.
number of bonds
number of neutrons
atomic number
mass number
6
How many elements are in compound H
2
O?
1
4
2
3
7
What is true about (O) oxygen and (Se) Selenium?
They are in the same group (column).
They have the same average atomic mass.
They are in the same period (row).
They are metalloids.
8
The atomic number tells you ___________.
the average atomic mass of an atom
the number of protons in an atom
the period number of an element
the group number of an element
9
Why do other elements in the same group (column) as (O) oxygen have similar properties?
They are all found in the same period (row).
They are all nonmetals.
They have the same atomic number.
Same number of valence electrons (outer electrons)
10
What is the name for a row (horizontal section that goes left to right) in the periodic table?
family
group
period
11
A __________ has gained or lost ELECTRONS.
new element
isotope
ion
12
What is the average atomic mass for Gold?
197
79
64
157
13
What is the chemical symbol of Gold?
Au
197
79
Gold
14
Which 2 groups are considered the most reactive?
Alkali Metals (Group 1A) & Noble Gases (Group 8A)
Alkali Metals (Group 1A) & Alkaline Earth Metals (Group 2A)
Halogens (Group 7A) & Noble Gases (Group 8A)
Alkali Metals (Group 1A) & Halogens (Group 7A)
15
___________ are found in the outermost shell (ring) of an atom.
Valence electrons
Ions
Isotopes
16
Which of the following sets of elements have similar properties?
B, Al, Ga
Ne, Ar, F
Si, P, Cl
17
The _________ is a chart that scientists use to organize and classify all the known elements.
periodic table of elements
Law of Conservation of Mass
atomic theory
18
What does each box on the Periodic Table represent?
group
compound
period
element
19
The smallest unit of an element that has the properties of that element is a(n) ________.
compound
atom
ion
20
Which of these elements is a metalloid?
Al - aluminum (13)
Na - sodium (11)
Te - tellurium (52)
O - oxygen (8)
21
How can you show a compound using red, green, blue beads with sticks?
3 red beads and 4 green beads connected with sticks
5 red beads connected with sticks
red, blue, and green beads with NO sticks
22
What happens when you add another proton to oxygen (O)?
It forms a new element.
It forms an isotope.
It forms an ion.
23
What is the MASS number of an atom with 2 protons, 2 electrons, and 2 neutrons?
2
6
4
24
Which element is considered a metal?
C - carbon (6)
He - helium (2)
H - hydrogen (1)
Zn - zinc (30)
25
Which element is found in the Group that is non reactive (outer shell is full - 8 electrons)?
Li - lithium (3)
Kr - krypton (36)
F - fluorine (9)
Be - beryllium (4)
26
How are metalloids different from metals and nonmetals?
Metalloids are much shinier than metals & nonmetals.
Metalloids conduct less heat and electricity.
Metalloids are more reactive than metals and nonmetals.
Metalloids can have properties of both metals & nonmetals.
27
Which of the following properties is a way that elements are organized in the Periodic Table?
alphabetically
metals/nonmetals
density
volume
28
Which element is considered a nonmetal?
Mg - magnesium (12)
Au - gold (79)
Si - silicon (14)
Cl - chlorine (17)
