Perioidic table Flashcards
1
Q
Define periodicity
A
Repeating pattern across different periods
2
Q
Group 2 properties?
A
Good conductors, high MP and BP
3
Q
Group 2 with oxygen
A
Bright white light, brick red, crimson, light green
4
Q
Group 2 with dilute acid
A
Form salt and hydrogen, reactivity increases
5
Q
Group 2 oxides and water
A
Ca - neutralises acidic soils
Mg - indigestion tablets
6
Q
Group 2 with water
A
REDOX
Rate of reaction increased down
Mg - solid due to slow reaction
With steam MgO
7
Q
Group 2 - thermal decomposition
A
Decreases down a group
8
Q
Halogen colours and states
A
F - Gas, yellow
Cl- gas, green
Br - liquid, orange
I - soli, purple
9
Q
AgNO3
A
Cl = white Br = cream I= yellow
10
Q
Define disproportionation
A
undergoes REDOX
Chlorine - kills bacteria but is toxic
11
Q
Cold NaOh
A
Nacl, NaClO, water
12
Q
Warm NaOH
A
Nacl, NaClO3, water
