Periodic Table Answers
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Which two chemists organized elements based on properties such as how the elements react or whether they are solid or liquid?
A
Lavoisier and MendeleevB
Döbereiner and NewlandsC
Newlands and MendeleevD
Lavoisier and Döbereiner3
Elements in group 2 are all called alkaline earth metals. What is most similar about the alkaline earth metals?
A
how many protons and neutrons they haveB
which chemical properties they haveC
how many total electrons they haveD
which period they are most often found in4
Dmitri Mendeleev and Henry Moseley developed their periodic tables about forty years apart. During that time, many discoveries in chemistry were made.
A
Atomic mass is the average mass of different samples of the same element.B
Different elements can have similar chemical properties even if their atomic masses are different.C
The number of protons in an atom is different than the atom’s total mass.D
Protons strongly affect an element’s atomic mass, while the electrons in atoms do not.6
What are 1A, 3B, and 7A examples of on the periodic table?
A
groups.B
numbersC
periodsD
rows
8
Part of one row of the periodic table is shown.
A
tin (Sn)B
antimony (Sb)C
tellurium (Te)D
iodine (I)9
The element phosphorus is located to the right of the element magnesium along the same period in the periodic table.Which best describes the relationship of the elements?
A
Magnesium has a larger atomic number.B
Phosphorus has a larger atomic mass.C
Magnesium is in the same category as phosphorus.D
Phosphorus has similar chemical properties as magnesium.10
This is how fluorine appears in the periodic table.
A
the atomic numberB
the atomic massC
the mass of neutronsD
the number of neutronsDid you find these answers helpful?
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