My Cards Flashcards
What is the charge of metals
Positive
What is the charge of non metals
Negative
What is the structure of ionic compound
regular lattice
Strong electrostatic forces of attraction between positive and negative ions
What are similar properties of ionic compounds
High melting point
High boiling point
Solid = can’t conduct electricity
Molten or dissolved = can conduct
When working out the formula of ions what needs to be reached
A neutral charge
What does ionic boding happen between and what is it
Metal and non metal, transferring of electrons
What is covalent bonding and how does it happen
Between non-metals, sharing electrons
What are simple covalent molecules properties
Low melting points
Low boiling points
Don’t conduct electricity
Gas or liquid at room temperature
What are the two giant covalent structures
Diamond (made of carbon)
Silicon dioxide
What are the properties of the giant covalent structures
High melting points
High boiling points
Do not conduct electricity
What is examples of structures made purely from carbon
Diamond graphite
How many bonds does diamond have, how many bonds does graphite have?
Diamond had 4 carbon bonds
Graphite has 3 carbon bonds
What are the properties of diamond
Hard
Strong
High melting + boiling point
Rigid
What are the properties of graphite
Has layers which are free to slide over eachother
Soft
Slippery
Layers Held together loosely so they can be rubbed off onto paper
Weak intermolecular forces between layers
Only non metal which is a good conductor of heat and electricity
Each carbon atom has one delocalised (free) electron and that’s how it can conduct heat and electricity
What is in metallic structure
Atoms are in layers which allows electrons to be delocalised which causes it to conduct heat and electricity. The electrons hold the atoms together in a regular structure as the atoms are positive and electrons are negative so the structure is strong
