Ionic Bonding
Covalent Bonding
Metallic Bonding
Balancing Equation
Moles
100
What type of atoms does ionic bonding occur between?
Metals and Non-metals
100
What type of atoms does covalent bonding occur between?
Non-metal and Non-metal
100
What type of atoms does metallic bonding occur between?
Metal
100
Mg + O2 → MgO
2Mg + O2 → 2MgO
100
What is Avogadro's Number
6.022 x 1023
200
What is the correct chemical formula for the ionic compound formed between aluminium ions and oxide ions?
Al₂O₃
200
How many pairs of electrons are shared between the two nitrogen atoms N2?
3 pairs / triple bond
200
What happens to the outer electrons of metal atoms in metallic bonding?
Delocalised
200
C3H8 + O2 → CO2 + H2O
C3H8 + 5O2 → 3CO2 + 4H2O
200
How many particles are present in 2.0 mol of NaCl
12.04×1024
300
Explain why ionic compounds generally have high melting points, referring to the forces between their particles.
Strong electrostatic attraction
300
Draw the Lewis structure for CO2
300
Explain why metals are malleable rather than shattering when a force is applied.
Layers slide
300
Fe2O3 + CO → Fe + CO2
Fe2O3 + 3CO → 2Fe + 3CO2
300
Calculate the number of moles in 300 g of H2SO4 (2 d.p)
3.06 mol
400
Explain why ionic compounds conduct electricity in molten state or in a solution, but not in solid state.
Need free moving charged particles.
400
Explain why diamond is very hard but graphite is soft, even though both are made entirely of carbon atoms.
Different structures/layers
400
A student says, “Metals conduct electricity because their atoms are touching each other.” Explain why this is incorrect and describe the role of delocalised electrons.
simply having atoms touch does not let electricity flow; conduction requires charged particles that can move freely.
400
NaOH + H2SO4 → Na2SO4 + H2O
2NaOH + H2SO4 → Na2SO4 + 2H2O
400
How many particles are in 48 g of CH4
18.066 x 1023