TED-Ed: Solving the puzzle of the periodic table - Eric Rosado

The video explores the origins and discovery of elements, starting with their cosmic formation in stars. It highlights ancient civilizations' awareness of elements like gold and copper, and Hennig Brand's accidental discovery of phosphorus. Antoine Lavoisier's work in defining elements and classifying them is discussed, followed by the development of the periodic table by chemists like John Dalton and Dmitri Mendeleev, who organized elements by atomic weight and properties, predicting undiscovered elements.

What analogy is used to describe the elements in the universe?

• A deck of cards

• A chessboard

• A jigsaw puzzle

• A musical symphony

Which element did Hennig Brand accidentally discover?

• Phosphorus

• Gold

• Silver

• Copper

Who is known as the father of chemistry for defining what an element is?

• John Dalton

• Dmitri Mendeleev

• Wolfgang Döbereiner

• Antoine Lavoisier

Which chemist is credited with creating the periodic table?

• Dmitri Mendeleev

• Hennig Brand

• John Dalton

• Antoine Lavoisier

What did Mendeleev use to organize the elements in the periodic table?

• Reactivity with water

• Magnetic properties

• Color

• Atomic weight and properties