Monday, September 23, 2019

IB Group 4: Chemistry



IB Group 4: Chemistry SL IB 1

Term 1
Term 2
Term 3

1.Stoichiometric relationships:
Introduction to the particulate nature of matter and chemical change
·         Chemical equations
The mole concept
·         Molar masses, Molecular formula and empirical formula.
Reacting masses and volumes
·         Limiting and excess reactants, theoretical, experimental and percentage yields.
·         Ideal gas equation.
2.Atomic structure
The nuclear atom
·         Nuclear symbol notation, number of protons, neutrons and electrons in atoms and ions. isotopes from given data, including mass spectra.
Electron configuration
·         The electromagnetic spectrum.
·         The shape of s and p orbitals
·         The electron configurations.
3.Periodicity
Periodic table
·         The electron configuration
Periodic trends
·         Prediction and explanation of behavior of elements and compounds.
4. Chemical bonding and structure
Ionic bonding and structure
        The ionic bond and the physical properties of ionic compounds
Covalent bonding
        Covalent structures and Polar nature of a covalent bond.
Intermolecular forces
        Properties of covalent compounds.
Metallic bonding
        Metallic bonding and properties
5.Energetics/thermochemistry
Measuring energy changes
        The heat change.
Hess's Law
·         Determination of the enthalpy change.
Bond enthalpies
·        The enthalpy changes from known bond enthalpy values.
6. Chemical kinetics
Collision theory and rates of reaction
·         Investigation of rates of reaction.
·         The effects of temperature, pressure/concentration and particle size on rate of reaction.
·         Construction of Maxwell–Boltzmann energy distribution curves.

7.Equilibrium
·         The characteristics of chemical and physical systems in a state of equilibrium
·         The Equilibrium constant.
·         Determination of the relationship between different equilibrium constants (Kc) for the same reaction
·         Application ofLe Châtelier’s principle.
11. Measurement and data processing
Uncertainties and errors in measurement and results
Graphical techniques

Internal Assessment
The internal assessment task worth 20% of the final assessment will be one scientific investigation taking about 10 hours and the write up should be about 6 to 12 pages long.
The IA can be
a hands-on laboratory investigation,
using a spreadsheet for analysis and modelling,
extracting data from a database and analysing it graphically producing a hybrid of spreadsheet/database work with a traditional hands-on investigation,
• using a simulation provided it is interactive and open-ended.

Assessment in IB year 12: Regular assessment will take place using various formative and summative assessment methods.
Final Assessment at the end of IB Year 13.
Paper 1 (Weighting: 20%)– Multiple Choice – 45 minutes (30 marks). A calculator is not allowed for this paper.
Paper 2(Weighting: 40%) – Written Paper – 1 hour 15 minutes (50 marks). A calculator is allowed for this paper, you will also be provided with a data booklet.
Paper 3(Weighting: 20%) – Scientific Skills and the Optional Module – 1 hour (35 marks)
IA: 20 %

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