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What is the smallest piece of an element that still has the characteristics of that element?
families
They are highly reactive
two
C
two
noble gases
atom
Dmitri Mendeleev
Hydrochloric acid is made of hydrogen (H) and chlorine (Cl). How many atoms are in one molecule of HCl?
families
They are highly reactive
two
C
two
noble gases
atom
Dmitri Mendeleev
What are the columns on the periodic table called?
families
They are highly reactive
two
C
two
noble gases
atom
Dmitri Mendeleev
How many atoms are needed to make the smallest molecules?
families
They are highly reactive
two
C
two
noble gases
atom
Dmitri Mendeleev
Which is the correct chemical symbol for carbon?
families
They are highly reactive
two
C
two
noble gases
atom
Dmitri Mendeleev
What is special about the elements in the first column of the periodic table?
families
They are highly reactive
two
C
two
noble gases
atom
Dmitri Mendeleev
What are the elements in the final column of the periodic table called?
families
They are highly reactive
two
C
two
noble gases
atom
Dmitri Mendeleev
Who is credited with designing the first periodic table?
families
They are highly reactive
two
C
two
noble gases
atom
Dmitri Mendeleev
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