In 1869, who had the idea for the periodic table?
How many natural elements are there?
Salt is always made of what?
What instrument is used to see atoms?
Berzelius did what?
Dobereiner looked at element’s chemical properties and noted there were groups of 3 called:
Lithium, Sodium and Potassium are called _______________Metals. Describe their reaction with water.
Canizzaro finally produced precise __________ ________
Arranged in order of atomic weight, Newlands noted that every
How did Mendeleev’s “chemical solitaire” find the patterns in the Periodic table?
Why was he using an incomplete deck of cards?
He combined
Most of the elements are
To make it work he had to do what?
When the missing elements were discovered did they match his predictions?
Kirchoff and Bunsen used spectroscopes examine the
Bohr said
Closest shell can only hold
Second can hold
Number of electrons in the
To be
The heaviest known natural element is
Atomic
Only whole numbers of protons exist, so there are only