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Science 8: Periodic Table Flashcards | StudBud
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Science 8: Periodic Table
Science 8: Periodic Table
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A final review following a periodic table unit.
Flashcards
26 cards
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Practice quiz
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Questions
26
Answers
1
Approximately how many elements were known when Mendeleev developed the periodic table?
60
100
20
120
2
What is the general trend in reactivity of the metals as you move down a group?
More reactive at top
Each group of metal has a different pattern
More reactive at bottom
3
How many neutrons does potassium have?
19
39
39.098
20
4
Who created the first periodic table?
Rutherford
Moseley
Mendeleev
Dalton
5
Metals have all of the properties listed EXCEPT...
Good conductors of heat and electricity
Brittle
Shiny
Malleable
6
How was Mendeleev's periodic table arranged?
increasing energy levels
Increasing atomic number
increasing number of valence electrons
Increasing atomic mass
7
The ability of a metal to be drawn into a wire is a property known as
brittleness
ductility
conductivity
malleability
8
Reactivity of alkali metals
does not vary among the members of the group
increases as you go down the group
decreases as you go down the group
varies in an unpredictable way within the group
9
Particles in an atom's nucleus that are neutral and have no charge are
electrons
megatrons
protons
neutrons
10
An element is defined by its number of
neutrons
protons
megatrons
electrons
11
What is the most reactive group of metals?
Halogen
Transition Metals
Alkali metals
Alkaline Earth Metals
12
How is the modern periodic table arranged?
Increasing atomic number
increasing valence electrons
Increasing atomic mass
increasing energy levels
13
What element are on the right side of the stair step line?
transistion metals
metalloids
metals
nonmetals
14
elements shown below
transition metals
alkali metals
actinides
lanthanides
15
What is the name of group 2 elements?
Alkaline Earth Metals
Noble Gases
Halogens
Alkali Metals
16
A neutral atom of the element nitrogen has 11 protons and 11 ______.
neutrons
muons
gluons
electrons
17
Horizontal rows on the periodic table
Periods
Classes
Families
Groups
18
Which is NOT true of the group of elements that are highlighted?
They are called Noble Gases
They all have a full outer shell of electrons
Most have 8 valence electrons
They are very reactive
19
What is the atomic number of potassium?
19
39
20
39.098
20
How does an element in row 3 of the PT differ from an element in row 6?
The element in row 3 has more mass.
The element in row 3 is always a gas.
The element in row 6 is always a gas.
The element in row 6 has more mass.
21
What are valence electrons?
Electrons in the innermost energy level.
Electrons in the outermost energy level
22
The most reactive nonmetal on the periodic table is
Helium
Astitine
Flourine
Carbon
23
What elements are located along the stair-step line?
inner transition metals
transition metals
metals
metalloids
24
A metalloid acts as a conductor at
none of these.
high temperatures.
low temperatures.
mid-temperature.
25
The place of an element in the modern periodic table is determined by its ____.
atomic mass
density
atomic number
chemical activity
26
Vertical columns on periodic table
rows
periods
classes
groups
