PERIODIC TABLE @Crash Course Chemistry Quiz

Who is the main focus of the story in the text?

• D. De Chancourtois

• C. A French scientist

• B. Hank Green

• A. Dmitri Mendeleev

What is the periodic table of elements?

• D. A religious text

• C. A map of the universe

• B. A list of chemical reactions

• A. A catalog of different types of atoms

What did Dmitri Mendeleev do to organize the elements?

• D. Sorted them by melting point

• C. Sorted them by size

• B. Sorted them by atomic weight

• A. Sorted them by color

What did Mendeleev realize about the periodicity of elements?

• A. It was random and unpredictable

• B. It was based on atomic weight

• C. It was based on reactivity

• D. It was based on color

What type of elements are the alkali metals?

• A. Non-reactive

• D. Noble gases

• C. Extremely reactive

• B. Gases

What is the main characteristic of transition metals?

• A. Extremely reactive

• B. Good conductors of electricity

• D. Form negative ions

• C. Nonmetals

What did Mendeleev predict about the missing elements in the periodic table?

• A. They would never be discovered

• B. They would have unique properties

• C. They would be non-reactive

• D. They would be similar to existing elements

What was the reaction of the scientific community to Mendeleev's theories?

• A. They were skeptical

• B. They were indifferent

• C. They were excited

• D. They were hostile

What physical phenomenon explains the periodicity of elements?

• A. Protons

• B. Neutrons

• C. Electrons

• D. Photons

What was a proposed improvement to the current periodic table?

• D. Removing the noble gases

• C. Making it a 3D model

• B. Changing the order of elements

• A. Adding more columns