OCR A+ Level Chemistry - Paper 1 Advanced Info
OCR Quiz
A+ .pdf
Level Chemistry - Paper 1 Advanced Info
OCR Quiz
A+ .pdf
Level Chemistry - Paper 1 Advanced Info Quiz .pdf
OCR A+ Level Chemistry - Paper 1
Advanced Info Quiz
What is Avagadro's constant? - ANS-6.02 x 10^23 number of particles in a mol
Define empirical formula - ANS-The simplest whole number ratio of atoms of each
element present in a compound
Define molecular formula - ANS-The number and type of atoms of each element in a
molecule
What is water of crystallisation? - ANS-Water molecules that are bonded into a
crystalline structure of a compound
What is the ideal gas equation? What are the units of each term? - ANS-pV= nRT - p =
Pa, V = m3, n = mol, R = J/K/mol, T= K
How do you determine percentage yield? - ANS-Percentage yield =
(actual yield/theoretical yield) x 100
What is atom economy? - ANS-Atom economy = (mass of desired product/mass of total
product) x 100
Why is a high atom economy important? - ANS-Less waste, more cost effective, more
sustainable, often more energetically favourable conditions are used
Define a transition element - ANS-An element which forms at least one ion with a
partially filled d-orbital - cannot have a full d subshell
Name 2 period 4 elements that are not transition elements - ANS-Zinc and Scandium
State 3 chemical properties which are characteristic of transition elements - ANS-They
form coloured ions, they are good catalysts and they can have one or more oxidation
states in compounds
Define ligand - ANS-An atom, ion or molecule that donates a pair of electrons to a
OCR A+ Level Chemistry - Paper 1 Advanced Info
OCR Quiz
A+ .pdf
Level Chemistry - Paper 1 Advanced Info
OCR Quiz
A+ .pdf
Level Chemistry - Paper 1 Advanced Info Quiz .pdf
, OCR A+ Level Chemistry - Paper 1 Advanced Info
OCR Quiz
A+ .pdf
Level Chemistry - Paper 1 Advanced Info
OCR Quiz
A+ .pdf
Level Chemistry - Paper 1 Advanced Info Quiz .pdf
central metal atom or ion
Define complex ion - ANS-A complex ion is a metal ion surrounded by coordinately
bonded ligands
What is a bidentate ligand? - ANS-A ligand that donates two lone pairs of electrons
What shape is associated with CN = 6? - ANS-Octahedral
What shape(s) are associated with CN = 4? - ANS-Square planar and tetrahedral
Which complex ions can show optical isomerism? - ANS-Octahedral complexes
Which complex ions can show cis/trans isomerism? - ANS-Square planar and
octahedral
What normally accompanies a ligand substitution reaction? - ANS-A colour change
What types of reactions can transition metal ions take part in? - ANS-Redox and
precipitation
How is the periodic table arranged? - ANS-By increasing atomic number
Define periodicity - ANS-Repeating trends in physical and chemical properties across
periods in the periodic table
Define 1st ionisation energy - ANS-The energy required to remove 1 mole of electrons
from 1 mole of gaseous atoms to form 1 mole of gaseous 1+ ions
What is the trend in first ionisation energy across periods 2 and 3? - ANS-As you move
across a period, the ionisation energy increases. The number of protons increases,
increasing positive charge which pulls the electrons closer to the nucleus - decreasing
radius, no real effect from shielding
What is a successive ionisation energy? - ANS-The energy need to remove each
electron, one at a time from one mole of gaseous atoms
What properties do giant covalent lattices have? - ANS-High melting and boiling point,
solids at STP, no solid electrical conductivity (other than graphite and graphene) and not
soluble in water
OCR A+ Level Chemistry - Paper 1 Advanced Info
OCR Quiz
A+ .pdf
Level Chemistry - Paper 1 Advanced Info
OCR Quiz
A+ .pdf
Level Chemistry - Paper 1 Advanced Info Quiz .pdf
OCR Quiz
A+ .pdf
Level Chemistry - Paper 1 Advanced Info
OCR Quiz
A+ .pdf
Level Chemistry - Paper 1 Advanced Info Quiz .pdf
OCR A+ Level Chemistry - Paper 1
Advanced Info Quiz
What is Avagadro's constant? - ANS-6.02 x 10^23 number of particles in a mol
Define empirical formula - ANS-The simplest whole number ratio of atoms of each
element present in a compound
Define molecular formula - ANS-The number and type of atoms of each element in a
molecule
What is water of crystallisation? - ANS-Water molecules that are bonded into a
crystalline structure of a compound
What is the ideal gas equation? What are the units of each term? - ANS-pV= nRT - p =
Pa, V = m3, n = mol, R = J/K/mol, T= K
How do you determine percentage yield? - ANS-Percentage yield =
(actual yield/theoretical yield) x 100
What is atom economy? - ANS-Atom economy = (mass of desired product/mass of total
product) x 100
Why is a high atom economy important? - ANS-Less waste, more cost effective, more
sustainable, often more energetically favourable conditions are used
Define a transition element - ANS-An element which forms at least one ion with a
partially filled d-orbital - cannot have a full d subshell
Name 2 period 4 elements that are not transition elements - ANS-Zinc and Scandium
State 3 chemical properties which are characteristic of transition elements - ANS-They
form coloured ions, they are good catalysts and they can have one or more oxidation
states in compounds
Define ligand - ANS-An atom, ion or molecule that donates a pair of electrons to a
OCR A+ Level Chemistry - Paper 1 Advanced Info
OCR Quiz
A+ .pdf
Level Chemistry - Paper 1 Advanced Info
OCR Quiz
A+ .pdf
Level Chemistry - Paper 1 Advanced Info Quiz .pdf
, OCR A+ Level Chemistry - Paper 1 Advanced Info
OCR Quiz
A+ .pdf
Level Chemistry - Paper 1 Advanced Info
OCR Quiz
A+ .pdf
Level Chemistry - Paper 1 Advanced Info Quiz .pdf
central metal atom or ion
Define complex ion - ANS-A complex ion is a metal ion surrounded by coordinately
bonded ligands
What is a bidentate ligand? - ANS-A ligand that donates two lone pairs of electrons
What shape is associated with CN = 6? - ANS-Octahedral
What shape(s) are associated with CN = 4? - ANS-Square planar and tetrahedral
Which complex ions can show optical isomerism? - ANS-Octahedral complexes
Which complex ions can show cis/trans isomerism? - ANS-Square planar and
octahedral
What normally accompanies a ligand substitution reaction? - ANS-A colour change
What types of reactions can transition metal ions take part in? - ANS-Redox and
precipitation
How is the periodic table arranged? - ANS-By increasing atomic number
Define periodicity - ANS-Repeating trends in physical and chemical properties across
periods in the periodic table
Define 1st ionisation energy - ANS-The energy required to remove 1 mole of electrons
from 1 mole of gaseous atoms to form 1 mole of gaseous 1+ ions
What is the trend in first ionisation energy across periods 2 and 3? - ANS-As you move
across a period, the ionisation energy increases. The number of protons increases,
increasing positive charge which pulls the electrons closer to the nucleus - decreasing
radius, no real effect from shielding
What is a successive ionisation energy? - ANS-The energy need to remove each
electron, one at a time from one mole of gaseous atoms
What properties do giant covalent lattices have? - ANS-High melting and boiling point,
solids at STP, no solid electrical conductivity (other than graphite and graphene) and not
soluble in water
OCR A+ Level Chemistry - Paper 1 Advanced Info
OCR Quiz
A+ .pdf
Level Chemistry - Paper 1 Advanced Info
OCR Quiz
A+ .pdf
Level Chemistry - Paper 1 Advanced Info Quiz .pdf
