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Chem Midterm - Periodic Table Flashcards | StudBud
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Chem Midterm - Periodic Table
Chem Midterm - Periodic Table
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Answers
1
What is the third category of elements?
solids
liquids
gases
semi-metals
2
English chemist Henry Moseley arranged his period table in order of increasing?
ionic radius
atomic number
atomic mass
atomic radius
3
Which of the following is a characteristic of metals?
most are gases at room temperature
brittle as a solid
poor conductor of electricity and heat
good conductors of electricity and heat
4
The first periodic table was arranged in order of increasing..
atomic mass
atomic number
atomic radius
ionic radius
5
What did Russian chemist Dmitri Mendeleev do in 1869?
discovered the first element
all of the above
started the field of chemistry
created the first periodic table
6
Why was the development of the periodic table a milestone in the history of chemistry?
all of the above
marked the beginning of the science of chemistry
brought order to seemingly unrelated facts
caused a schism or split in the field of chemistry
7
How many groups are there on the periodic table?
114
7
186,000
18
8
What did the periodic table help chemistry predict?
none of the above
the monetary value of an element
the existence of unknown elements
the name of an element
9
Where on the periodic table do you find nonmetals?
upper right
lower left
lower right
upper left
10
How does the IUPAC system identify groups?
as lower case letters a through r
as numbers 1 through 8
as roman numerals I through IIXX
as upper case letters A through R
11
Where on the periodic table do you find metals?
upper left
lower left
upper right
lower right
12
How many periods are there on the periodic table?
186,000
18
114
7
13
Which of the following elements is a liquid at room temperature?
mercury
hydrogen
carbon
nitrogen
14
What is a period as it relates to the period table?
diagonal line
horizontal row
orbital sphere
vertical column
15
Why are some of the elements placed under the main part of the periodic table?
they don't follow the modern periodic law
all of the above
to keep the periodic table from being too wide
they have not been discovered yet
16
What is a group as it relates to the periodic table?
orbital spheres
vertical columns
horizontal rows
diagonal line
17
Elements that have similar properties are aligned in the same
group
all of the above
table
period
