The Periodic Table Flashcards
1
Q
What are alkali metals?
A
Metals from group 1 in the periodic table, that react with water to produce alkaline solution.
2
Q
What is group 2 on the periodic table called?
A
Alkali earth metals
3
Q
What is group 0 on the periodic table called?
A
Noble gases
4
Q
Why did Mendeleev leave gaps in his periodic table?
A
He (correctly) predicted some elements had not been discovered.
5
Q
How did Mendeleev arrange the elements?
A
By increasing atomic number (mass)
6
Q
What was Newland’s theory?
A
1864 - “The law of octaves”
Every eighth element has similar properties.
The pattern worked out but broke down.
7
Q
What are halogens?
A
Elements from group 7 of the periodic table, such as chlorine and bromine.
