Period 3 Flashcards
What is the equation for sodium reacting with cold water
2Na + 2H2O forms 2NaOH + H2
What do period 3 elements form when reacting with oxygen
Oxides
What flame does sodium burn with and to produce what
Yellow flame
White solid
What flames do the rest burn with and to form what
(Except sulfur)
White flame
White solid smoke
What flame does sulfur burn with and to form what
Blue flame
Acidic choking gas
Draw the structure of sulfur dioxide and sulfur trioxide
What is he structure and bonding of the metal oxides and why
Ionic oxides
Giant ionic lattices
Large electronegativity difference between metal and oxygen
What is the trend in melting points in the ionic metal oxides
Increase charge on the cation makes the ionic forces stronger so the melting points increase
Which one is a macromolecular oxide
SiO2
Which 2 are simple molecular oxides
Phosphorus oxide
Sulfur dioxide
Weak van der walls and pdd forces
Covalent
Why is phosphorus oxide stronger than sulfur dioxide
More electrons and is a bigger molecule so has larger van der waals forces
What do metal ionic hydroxides form when reacting with water
What type of reaction is it
Hydroxides
Very exothermic reaction
Why don’t Al2O3 and SiO2 dissolve in water
High strength ionic lattice and macromolecular structure
Which oxides show basic and acidic behaviour
Ionic metal oxides are basic
Non metal covalent oxides are acidic
What do basic oxides react with acids with to make
Salts
