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Atomic Structure & Periodic Table Flashcards | StudBud
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Atomic Structure & Periodic Table
Atomic Structure & Periodic Table
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1
How many electrons does Chlorine have?
7
17
8
18
2
The elements to the left of the dark stair stepline on the periodic table are what:
Gasses
Positive
NonMetals
Metals
3
What is the symbol for calcium?
C
CA
Ca
Cal
4
Why are elements in the same family of the periodic table have similar bonding properties?
The elements have similar atomic masses
The elements have similar number of protons
The elements have similar valence electrons
The elements have similar atomic sizes
5
Most of the elements on the periodic table are:
Liquids
Non metals
Metals
Rare-earth metals
6
The atomic number of an atom is equal to the total number of:
Neutrons in the nucleus
Neutrons plus protons in the atom
Protons and neutrons
Protons in the nucleus
7
The nucleus contains which of the following subatomic particles
Protons and Valence Electrons
Neutrons and Protons
Electrons and Neutrons
Protons and electrons
8
Which metalloid is most commonly used to make computer chips?
Boron
Arsenic
Silicon
Tellurium
9
Which of the 4 elements is listed first (closer to the beginning) on the periodic table?
Sulfur Atomic # 16
Helium Atomic # 2
Lithium Atomic # 3
Nitrogen Atomic # 7
10
How many elements are listed in the periodic table?
93
60
72
More than 100
11
A __________ is a column (up/down) and a __________ is called a row (left/right)
Period,group
Group,period
Metal,metalloid
Metal,group
12
Which of the following is the basis for arranging the elements on the modern periodic table?
Number of protons
Alphabetical order
Date of discovery
Masses of atoms
13
An element has an atomic number of 80 & atomic mass of 200. The # of protons in the atom is:
120
160
200
80
14
Unlike metals, many nonmetals are:
Shaped and made into wire
Shiny
Good conductors of heat and electricity
Gasses at room temperature
15
How many valence electrons are in the outermost energy shell of a calcium atom?
4
3
2
1
16
If Hydrogen (H) is a nonmetal, why is it listed in Family #1?
Hydrogen has 1 proton and 1 valence electron
Hydrogen doesn't have enough neutrons to be called a metal
Hydrogen is not a nonmetal
Hydrogen has too few protons to be considered a nonmetal
17
The horizontal rows of elements on the periodictable are called what?
Periods
Keys
Families
Groups
18
What do elements in the same column have in common?
Similar chemcical properties
Masses of their atoms
Size of their atoms
Number of protons
19
Where are valence electrons?
On the very first energy level
All electrons are valence electrons
In the nucleus
On the outermost energy level
20
To determine the number of neutrons in an atom you should do which of the following:
Atomic Mass - Atomic # = Neutrons
Atomic # - # of Electrons = neutrons
Atomic mass - # of Valence Electrons = Neutrons
Atomic # - # of protons = Neutrons
21
The total number of protons and neutrons in the nucleus determines the atom's:
Atomic Mass Number
Size
Atomic Number
Symbol
22
Which is the most reactive family on the periodic table?
Halogens
Noble gasses
Alkali metals
Alkali earth metals
23
Who is credited for developing the 1st periodic table? Known as "father of the Periodic table"
Einstein
Mendeleev
Mendel
Moseley
24
If an element is shiny, a good conductor of heat and electricity & is very strong it is a:
Metal
Gas
Metalloid
Nonmetal
