The Periodic Table and Periodic Law

How did Mendeleev arrange the elements?

• alphabetical 
• density
• melting point
• atomic mass

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The horizontal row on the periodic table is called a

• group
• family
• period
• atomic number

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Dimitri found that there was a pattern of properties that repeated every ____ elements.

• 2
• 4
• 5
• 7

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A vertical column is called...

• group
• tower
• period
• crew

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How many elements follow the periodic law?

• 7
• 98
• 110
• All of them

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A rule that states that repeating chemical and physical properties of elements change periodically with the atomic number of the elements is the _________.

• periodic law
• alkaline-earth metals
• actinide
• group rule

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Pure forms of these elements are stored in oil so they won't react with oxygen and water in the air.

• Alkali Metals
• Alkaline-earth metals
• Halogens
• Noble Gases

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Most of the elements on the periodic table are classified as _____.

• Metals
• Nonmetals
• Metalloids
• Periods

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Based on chemical properties, iodine (I) belongs in the same group as ___.

• Helium and Neon

• Iron and Zinc

• Hydrogen and Lithium

• Bromine and Chlorine

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What are 3 broad classes of elements?

• metals, nonmetals, and metalloids

• solids, liquids, and gases

• small, medium, and large

• helium, neon, and argon