Bonding Flashcards
Explain how a sodium atom turns into a sodium ion
Sodium atom loses electrons
From the outer electron
Gains a positive charge
Explain why ions in a lattice structure of chloride and sodium ions stay in place
Sodium ions have a positive charge and chloride ions have a negative charge
Ions with opposite charge are attracted to each other
Ions are arranged alternatively in each direction
Why are Chloride ions are strongly attracted to sodium ions in sodium chloride
Opposite charged ions attract each other because chloride ions are negative and sodium ions are positive
Explain why chloride and sodium ions in a lattice structure stay in place.
Sodium ions have a positive charge and chloride ions have a negative charge
Ions with opposite charge are attracted or positive sodium ions attract negative chloride ions
Ions arranged alternatively in each direction
Compare the properties of copper and graphite to decide which material would be better for making a wire,
Both can conduct electricity
Both have high melting points
Graphite is softer and slippery
Graphite is more brittle
Copper is more ductile
Copper is Malleable
Capper is not brittle
In conclusion, copper more suitable as it’s more ductile than graphene
Why does liquid iodine not conduct electricity
Iodine has no delocalised electrons
So iodine has no ions
Therefore can’t carry charge
Give properties ionic compounds
High melting point
Can’t conduct electricity when solid
Carry charge when dissolved
Strong electrostatic forces of attraction
Compare and explain the bonding and properties of diamond and graphite
Both made from carbon
Diamond has 4 strong covalent bonds
Graphite has 3 strong covalent bonds
Graphite is arranged in layers and have weak intermolecular forces
Both require lots of energy to break bonds so they have high mp
Diamond can’t conduct electricity as no delocalised electrons
Graphite conduct electricity as many delocalised electrons
Diamond is hard and strong
Graphite soft and slippery
Explain why alloys are harder to than pure metals
Alloys have different sized atoms
This breaks the regular lattice structure
So it’s more difficult for layers of ions to slide over each other
Explain why you would not expect titanium chloride to be a liquid at room temp.
Titanium chlorine is an ionic compound
Have high melting points
Strong bonds between ions
Won’t break bonds at room temp