Atoms, Elements and the Periodic Table Flashcards
1
Q
What is an Elements (3)
A
- Basic Building Blocks
- Cannot be broken down
- Made up of atoms
2
Q
What does the atomic number show?
A
Number of protons
3
Q
What is the mass of atom is called?
A
Relative atomic mass
4
Q
What is in the atomic structure?
A
Nucleus = + (Positive) Electrons = - (Negative)
5
Q
What does the Nucleus contain?
A
Protons = + (Positive) Neutons = n/a (No Charge)
6
Q
What are rows on the periodic table?
A
Periods
7
Q
What are column on the periodic table?
A
Groups
8
Q
What are periods on the periodic table?
A
Rows
9
Q
What are Groups on the periodic table?
A
Column
10
Q
Who created the periodic table?
A
Mendeleev
11
Q
How did Mendeleev arrange the periodic table
A
Atomic Mass
12
Q
How do we arrange the periodic table now?
A
Atomic Number
13
Q
What did Mendeleev leave?
A
Left gaps which represented elements that had not been discovered
