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Atomic Number
Symbols
Atomic Mass
Definitions
Miscel.
100
1
What is the atomic number of Hydrogen?
100
Cl
What is the symbol for Chlorine?
100
1.008
What is the atomic mass of Hydrogen?
100
positively charged subatomic particle
What is proton?
100
isotope
What atom has a different number of neutrons than other atoms of the same element?
200
6
What is the atomic number of Carbon?
200
He
What is chemical symbol for Helium?
200
15.999
What is the atomic mass of oxygen?
200
negatively charged subatomic particle
What is an electron?
200
protons and neutrons
What are counted in an atom to determine mass number?
300
11
What is the atomic number of Sodium?
300
K
What is the chemical symbol for Potassium?
300
56
What is the atomic mass of Iron?
300
Subatomic particle without a charge
What is a neutron?
300
the number of protons
What is the atomic number of an element?
400
47
What is the atomic number of Silver?
400
W
What is the chemical symbol for Tungsten?
400
32
What is the atomic mass of Sulfur?
400
Characteristics that can be observed without changing the composition of the substance.
What are Physical Properties?
400
in order of atomic numbers
How are elements arranged on the periodic table?
500
92
What is the atomic number of Uranium?
500
Eu
What is the chemical symbol for Europium?
500
252.095
What is the atomic mass of Einsteinium?
500
characteristics that describe how a substance reacts with other substances to form new substances.
What are Chemical Properties?
500
average atomic mass
What is the weighted average of the atomic masses of an element's naturally occurring isotope?