Chemistry for the gifted and talented: oxidation numbers

No comments

This activity introduces oxidation numbers by giving a conceptual foundation for them in terms of electron accounting and polar bonds. It then shows how the model used so far needs refining.

Downloads

Oxidation numbers
Handout | PDF, Size 0.27 mb

Websites

Chemistry for the gifted and talented book: £19.95

No comments

Level

16-18 years

Use

Specification

Republic of Ireland
- Leaving Certificate
  - Chemistry
    - 2. Chemical bonding
      - 2.3 Covalent Bonding
        Depth of treatment
        Molecules. Minute size of molecules.
      - 2.4 Electronegativity
        Depth of treatment
        Electronegativity. Periodic variation of electronegativity - explanation for general trends in values: (i) down a group
Wales
- A/AS level
  - WJEC Chemistry
    - Unit 1: THE LANGUAGE OF CHEMISTRY, STRUCTURE OF MATTER AND SIMPLE REACTIONS
      - 1.1 Formulae and equations
        (b) oxidation numbers of atoms in a compound or ion
      - 1.4 Bonding
        (d) concepts of electronegativity and bond polarity
    - Unit 3: PHYSICAL AND INORGANIC CHEMISTRY
      - 3.2 Redox reactions
        (a) how to construct ion/electron half-equations, for example, for the reduction of acidified Cr₂O₇²⁻ to Cr³⁺ and acidified MnO⁴⁻ to Mn²⁺ and the oxidation of S₂O₃²⁻ to S₄O₆²⁻
        (c) redox reaction between Cu²⁺ and I⁻ and the determination of the liberated iodine with S₂O₃²⁻
Northern Ireland
- A/AS level
  - CCEA Chemistry
    - Unit AS 1: Basic Concepts in Physical and Inorganic Chemistry
      - 1.3 Bonding
        1.3.8 define the term electronegativity and explain the trend in the electronegativity of elements down Groups and across Periods;
        1.3.9 explain that bond polarity arises when covalently bonded atoms have different electronegativities and use partial charges to show that a bond is polar;
      - 1.7 Redox
        1.7.1 calculate the oxidation state for an element in a compound or ion, including peroxides and metal hydrides;
England
- A/AS level
Scotland
- Higher
  - SQA Chemistry
    - 1. Chemical changes and structure
      - (a) Periodicity
        Atoms of different elements have different attractions for bonding electrons. Electronegativity is a measure of the attraction an atom involved in a bond has for the electrons of the bond.
      - (b) Structure and bonding
        (i) Types of chemical bond
        Polar covalent bonds are formed when the attraction of the atoms for the pair of bonding electrons is different. Delta positive (δ+) and delta negative (δ-) notation can be used to indicate the partial charges on atoms, which give rise to a dipole.

Resource
Chemistry for the gifted and talented book introduction
Chemistry for the gifted and talented is a refreshingly challenging educational book containing a wide range of differentiated activities for use in school and college.
Feature
Allotropes of carbon
2020-12-14T12:27:00Z
Use this infographic with your 14–16 classes to boost their knowledge of diamond, graphite, graphene and fullerenes
Feature
The grand end of term quiz
2020-11-25T08:24:00Z
Looking for something fun to wrap up the term? Challenge your 14–16 students with this chemistry-themed quiz

No comments yet

You're not signed in.

Only registered users can comment on this article.

More Resources

Resource
Smartphone spectroscopy: Beer–Lambert law
Use your smartphone to measure changes in concentration across different concentrations of squash at home or in the classroom. Use your results to predict the concentration of an unknown dilution of squash.
Resource
The Gibbs free energy | Post-16 thermodynamics tutorials
Use this tutorial, including a video demonstration, to help post-16 students learn about equilibrium, the Gibbs free energy and the feasibility of reactions.
Resource
Entropy | Post-16 thermodynamics tutorials
Try this tutorial with accompanying videos to help teach students on post-16 courses about the concept of entropy and the second law of thermodynamics.

Chemistry for the gifted and talented: oxidation numbers

Downloads

Oxidation numbers

Websites

Chemistry for the gifted and talented book: £19.95

Level

Use

Category

Specification

Related articles

Chemistry for the gifted and talented book introduction

Allotropes of carbon

The grand end of term quiz

No comments yet

Only registered users can comment on this article.

More Resources

Smartphone spectroscopy: Beer–Lambert law

The Gibbs free energy | Post-16 thermodynamics tutorials

Entropy | Post-16 thermodynamics tutorials