History and Organization of Periodic Table Review

Who is credited with the creation of the first periodic table?

• Albert Einstein

• Isaac Newton

• Dmitri Mendeleev

• Marie Curie

What is the modern periodic table based on?

• Number of protons and reactivity

• Atomic number and chemical properties

• Atomic weight and physical properties

• Electron configuration and melting point

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Which group of elements is known as alkali metals?

• Group 1 elements

• Transition metals

• Noble gases

• Group 7 elements

What are the characteristics of noble gases?

• Visible color and high odor

• Colorless, odorless, and low reactivity

• Highly reactive and colorful

• Strong odor and high reactivity

What is the significance of Mendeleev's periodic table?

• It was a system for organizing historical events

• It was used to classify animals based on their habitats

• It was a method for categorizing different types of rocks

• It organized elements based on their properties and predicted the existence of undiscovered elements.

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How are elements organized in the periodic table?

• Based on their color and size

• Based on their atomic number and chemical properties

• Based on their melting point and boiling point

• Based on their alphabetical order

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What are the properties of elements in the same group or family?

• Same physical properties

• No relation in properties

• Different chemical properties

• Similar chemical properties

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What is the relationship between the number of electron shells and periods in the periodic table?

• The number of electron shells remains constant

• The number of electron shells increases

• The number of electron shells is unrelated to periods in the periodic table

• The number of electron shells decreases

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How do atomic size and electronegativity change across a period in the periodic table?

• Atomic size decreases and electronegativity increases

• Atomic size decreases and electronegativity remains constant

• Atomic size increases and electronegativity decreases

• Atomic size remains constant and electronegativity decreases

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Alkali metals are the most reactive of all the metals because they have ____ electron(s) in their outer energy level.

• 1
  
• 2
• 7
• 8

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