Unit 4: Periodic Trends Flashcards
1
Q
Mendeleev
A
- Organized elements by increasing atomic mass
- Organized elements so that elements in the same row have similar properties.
2
Q
Moseley
A
- Organized elements by increasing atomic number
- Created the modern-day periodic table
3
Q
Periodic Law
A
When elements are arranged in order of increasing atomic number, there is a periodic pattern in their physical and chemical properties.
4
Q
Period
A
- Horizontal row of the periodic table
- Also called series
- Numbered 1-7
5
Q
Group
A
- Verticle collums on a periodic table
- Also called families
- Numbered 1-18
6
Q
F Block
A
- F block: Inner Transition Metals
7
Q
D Block
A
- ## D block: Transition Metals
8
Q
S and P Blocks
A
- S & P Blocks: Representative metals
- P: group 13-18
- S: Group 1-2
9
Q
Metals
A
- Left of staircase
- Shiny/Lustrous
- Malleable/Ductile
- Good Conductors of heat and electricity
10
Q
Non-Metals
A
- Right of staircase
- Dull
- Brittle
- Poor conductors, but good insulators
11
Q
Metalloids
A
- Touch staircase
- Properties of metals and non-metals
- Semi-conductors: Do not conduct electricity but will at high temps or when certain substances are added.
12
Q
Ionization Energy
A
The energy required to remove an electron
13
Q
A
