C1 - Development of the Periodic Table
Call Kai
Learn
Practice Test
Spaced Repetition
Match
Flashcards
Knowt Play1/3
There's no tags or description
Looks like no tags are added yet.
Name | Mastery | Learn | Test | Matching | Spaced | Call with Kai |
|---|
No analytics yet
Send a link to your students to track their progress
4 Terms
What were the two obvious ways to categorise elements?
Their physical and chemical properties and their atomic weight.
When did Dimitri Mendeleev develop his Table of Elements of the 50 known elements of that time?
1896
What did Dimitri Mendeleev do in his Table of Elements that contrasted previous attempts?
He left gaps for undiscovered element to ensure the elements with similar properties stayed in the same groups. He also swapped elements out of the strict order of atomic mass and took also into account the properties of elements.
What was wrong with attempts at the periodic table before Dimitri Mendeleev?
Elements were ordered strictly by atomic weight and not all elements had been discovered yet.
