Chemistry Unit 1 AQA checklist

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Chemistry Unit 1 Checklist : AQA
Section 1: Atomic Structure
Structure of the atom (fundamental particles) inc. protons, neutrons & electrons
Atomic Models
Relative mass (mass number and atomic number) inc. isotopes
Electron arrangement (levels and sub-levels(spd))
Mass spectrometer (ionisation, acceleration, deflection, detection), calculate relative atomic
mass from isotopic abundance
Ionisation energies (understand the term and know how they give evidence for electron
arrangement in group 2 and period 3).
Section 2: Amount of Substance
understand the concept of the mole and avogadro constant
recall the ideal gas equation and apply to simple calculations in S.I units
understand the concept of and the relationship between empirical and molecular formulae.
Calculate empirical formulae (from data giving % composition by mass)
Formulas, Yields and Atom economy:
Write balanced equations for reactions studied. Balance equations when given products
and recants.
calculate reacting volumes of gases
calculate concentrations and volumes for reactions in solutions
recall % atom economy formula and be able to use it.
calculate reacting masses, percentage atoms economy and percentage yield from
balanced equations.
Section 3: Bonding and periodicity
understand the nature of ionic, covalent and metallic bonds as well as the structure
bond polarity- understand the term electronegativity, understand the nature of electron
distribution in a covalent bond. Understand that covalent bonds between different elements
will be polar to different extents
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Forces between molecules- permanent dipole-dipole, induced dipole-dipole (van der walls)
and hydrogen bonding.…read more

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know that catalytic cracking takes place at a slight pressure, high temperature and in the
presence of a zeolite catalyst and is used mainly to produce motor fuels and aromatic
hydrocarbons (mechanism not required)
understand the economic reasons for the cracking of alkanes (e.g.…read more


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