Chemistry 2nd Semester Review

The idea of arranging the elements on the periodic table according to their chemical and physical properties is attributed to

• Mendeleev

• Moseley

• Bohr

• Ramsay

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NGSS.HS-PS1-1

Mendeleev noticed that the properties of elements usually repeated at regular intervals when the elements were arranged in order of increasing

• atomic number

• density

• reactivity

• atomic mass

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NGSS.HS-PS1-1

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The person whose work led to a periodic table based on increasing atomic number was

• Moseley

• Mendeleev

• Rutherford

• Cannizzaro

Mosely's work led to the realization that elements with similar properties occured at regular intervals when the elements were arranged in order of increasing

• atomic mass

• density

• atomic number

• radioactivity

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NGSS.HS-PS1-1

Argon, krypton, and xenon are

• alaklaine earth metals

• noble gases

• actinides

• lanthinides

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NGSS.HS-PS1-1

The periodic law states that the chemical and physical properties of elements are periodic functions of their atomic

• masses

• numbers

• radii

• structures

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NGSS.HS-PS1-2

Elements in a group or column on the periodic table can be expected to have similar

• atomic masses

• atomic numbers

• properties

• number of neutrons

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A horizontal row of blocks on the periodic table is called a(n)

• group

• period

• family

• octet

The atomic number of lithium, the first element in group one is 3. The atomic number of the second element in group one, Na, is

• 4

• 10

• 11

• 18

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NGSS.HS-PS1-1

Krypton, atomic number 36 is the fourth element in group 18. What is the atomic number of xenon, the fifth element in group 18?

• 54

• 68

• 72

• 90

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NGSS.HS-PS1-1