Chemistry Basics Quiz

What is a valence electron?

• An electron in the outermost shell of an atom

• An electron in the innermost shell of an atom

• A proton in the nucleus of an atom

• A neutron in the nucleus of an atom

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which of the following is a periodic trend?

• Atomic radius

• Atomic mass

• Atomic number

• Atomic weight

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What does the periodic table group represent?

• A column of elements with similar properties

• A row of elements with increasing atomic number

• A set of elements with the same atomic mass

• A group of elements with the same color

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What is ionization energy?

• The energy required to remove an electron from an atom

• The energy released when an atom gains an electron

• The energy required to split an atom

• The energy released during a chemical reaction

Who created the first periodic table in 1869?

• Albert Einstein

• Isaac Newton

• Dmitri Mendeleev

• Marie Curie

Mendeleev used (a)   to arrange the elements in the periodic table.

• Atomic mass
• Similarities in their properties
• Alphabetical order
• Random selection

How do valence electrons affect an element?

• They determine the element's color

• They influence the chemical properties

• They change the element's mass

• They affect the element's temperature

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NGSS.HS-PS1-1

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What are the columns of the periodic table called?

• Periods

• Groups

• Rows

• Sections

What are the rows of the periodic table called?

• Groups

• Columns

• Periods

• Levels

What do the "A" numbers at the top of the columns (groups) of the periodic table represent?

• Atomic mass

• Number of valence electrons

• Atomic number

• Number of neutrons