Question John Newlands English chemist John Newlands presented an idea called the Law of Octaves. What was the reaction of scientists to 25:08 27:48 this idea? – Chemical Similarities Which two elements smelled similar. Where are they located on the Periodic Table 27:48 29:17 – Dmitri Mendeleyev When Mendeleyev began to organize the elements using the cards, by what two principles was he trying to organize 29:17 35:00 the elements? – The Modern Periodic Table Looking at the Periodic Table horizontally (reading across), what is increasing? 35:00 - 37:00 Looking at the table vertically, how are the elements grouped together? Mendeleyev to Now: Changes Why did Mendeleyev leave gaps in his Periodic Table? to the Periodic 37:00 39:02 – Mendeleyev predicted the properties of an undiscovered element that should lie next to Aluminum on his chart. How did he describe this unknown element and what was the result of his prediction?
Question John Newlands 25:08 – 27:48 English chemist John Newlands presented an idea called the Law of Octaves. What was the reaction of scientists to this idea? Chemical Similarities 27:48 – 29:17 Which two elements smelled similar. Where are they located on the Periodic Table Dmitri Mendeleyev 29:17 – 35:00 When Mendeleyev began to organize the elements using the cards, by what two principles was he trying to organize the elements? The Modern Periodic Table 35:00 - 37:00 Looking at the Periodic Table horizontally (reading across), what is increasing? Looking at the table vertically, how are the elements grouped together? Mendeleyev to Now: Changes to the Periodic 37:00 – 39:02 Why did Mendeleyev leave gaps in his Periodic Table? Mendeleyev predicted the properties of an undiscovered element that should lie next to Aluminum on his chart. How did he describe this unknown element and what was the result of his prediction?
09.29.16_the_order_of_the_elements.docx