C2.2.9 - Developing The Periodic Table Flashcards Preview

C1 - C3 > C2.2.9 - Developing The Periodic Table > Flashcards

Flashcards in C2.2.9 - Developing The Periodic Table Deck (8):
1

What was Mendeleev’s arrangement?

It was an attempt to organise elements into a table

2

What did mendeleev’s arrangement contain?

The atomic weights of known elements
Knowledge of the chemical reactions of different elements
Knowledge of physical properties, such as melting / boiling points

3

How did Mendeleev arrange elements in his table?

By increasing atomic weight and grouping the elements with similar chemical properties

4

What did Mendeleev predict?

That elements with similar chemical reactions would be discovered, so he left spaces for them in his graph

5

What was the issue with mendeleev’s table?

He did not know about protons and atomic structure

6

When did Mendeleev die?

1907

7

Who discovered that an atom’s atomic number was the number of protons?

Henry Moseley

8

When did Henry Moseley discover that the amount of protons were equal to an atom’s atomic number?

1913