Mendeleev's Journey to the Periodic Table: The Card Game That Changed Chemistry

In 1869, Mendeleev sought a pattern among elements, struggling with incomplete data. He devised a card game, 'chemical solitaire,' combining atomic weights and properties. After days without sleep, he dreamt of a table organizing 63 elements, leading to the periodic table. This breakthrough revealed a numerical pattern in matter, revolutionizing chemistry by showing relationships between elements.

What was Mendeleev's unique method to find a pattern among elements?

• Writing elements on cards

• Conducting chemical reactions

• Using a microscope

• Using a telescope

Before Mendeleev, how did chemists group elements?

• By properties and atomic weight

• By temperature and pressure

• By atomic number and density

• By color and size

What was Mendeleev's great insight in organizing the elements?

• Using only atomic weight

• Combining properties and atomic weight

• Focusing on color and texture

• Grouping by melting point

How long did Mendeleev work without sleep before his breakthrough?

• Four days and four nights

• One day and one night

• Three days and three nights

• Two days and two nights

What did Mendeleev see in his dream that led to his breakthrough?

• A grand table of elements

• A new element

• A chemical reaction

• A scientific formula

What deep truth did Mendeleev reveal about the world?

• The origin of the universe

• The existence of new planets

• A numerical pattern in matter

• The secret to eternal life

What does the periodic table help us understand?

• The history of the Earth

• The building blocks of the world

• The future of technology

• The structure of galaxies

Where can you commonly find the periodic table displayed?

• In sports arenas

• In chemistry labs

• In art museums

• In music studios

What is remarkable about the periodic table?

• It predicts weather patterns

• It displays famous scientists

• It reveals relationships between elements

• It shows the history of chemistry

How did Mendeleev's periodic table impact the understanding of elements?

• It made chemistry more confusing

• It eliminated the need for experiments

• It provided a universal understanding

• It focused only on metals