Which of the following would NOT be considered matter?
gravity
water
air
hair
A Lewis Dot diagram of Phosphorus (P) would show how many electrons?
3
5
8
15
Who invented the Periodic Table?
Gregor Mendel
Dmitri Medeleev
Henry Moseley
Michelle Goode
Which of the following elements is a metalloid?
Cesium (Cs)
Krypton (Kr)
Arsenic (As)
Plutonium (Pu)
How many neutrons does Bromine (Br) have?
35
45
80
115
A Bohr Model of Radium (Ra) would have how many electron orbitals/shells?
2
5
6
7
Which element belongs to the least reactive group of elements?
Neon (Ne)
Silver (Ag)
Carbon (C)
Potassium (K)
Which subatomic particle determines the reactivity of a group of elements on the periodic table
number of protons
number of electrons
number of neutrons
number of valence electrons
An element is identify by
its number of neutrons
its number of protons
its atomic mass
the type of charge
Which best explains how the atomic size of the elements is arranged on the periodic table.
The atomic size decreases from left to right and decreases from top to bottom.
The atomic size increases from left to right and increases from top to bottom
The atomic size decreases from left to right and increases from top to bottom.
The atomic size increases from left to right and decreases from top to bottom.
Properties such as magnetism, luster, and malleablity have been used to group together which category of elements on the periodic table?
metals
nonmetals
metalloids
noble gases
Which best describes a row of elements on the periodic table?
group
family
period
column
What is NOT included in each square of the periodic table?
atomic number
atomic mass
chemical symbol
melting point
Most of the elements on the periodic table are _________?
metals
nonmetals
metalloids
gases
Which element is a liquid at room temperature?
Oxygen (O)
Carbon (C)
Neon (Ne)
Mercury (Hg)
How many protons are in a sodium (Na) atom?
1
3
11
23
Which element is a member of the alkaline earth metals?
Lithium (Li)
Bromine (Br)
Beryllium (Be)
Aluminum (Al)
How can the element carbon be classified?
metal
nonmetals
metalloid
halogen
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