When.com Web Search

  1. Ads

    related to: a-level chemistry questions and answers

Search results

  1. Results From The WOW.Com Content Network
  2. A-level - Wikipedia

    en.wikipedia.org/wiki/A-level

    The A-level (Advanced Level) is a subject-based qualification conferred as part of the General Certificate of Education, as well as a school leaving qualification offered by the educational bodies in the United Kingdom and the educational authorities of British Crown dependencies to students completing secondary or pre-university education. [1]

  3. Experiments and Observations on Different Kinds of Air

    en.wikipedia.org/wiki/Experiments_and...

    His colleagues therefore believed that they could easily reproduce Priestley's experiments to verify them or to answer the questions that had puzzled him. [8] Although many of his results puzzled him, Priestley used phlogiston theory to resolve the difficulties. This theory, however, led him to conclude that there were only three types of "air ...

  4. Ferrate (VI) - Wikipedia

    en.wikipedia.org/wiki/Ferrate(VI)

    Ferrate(VI) is the inorganic anion with the chemical formula [FeO 4] 2−.It is photosensitive, contributes a pale violet colour to compounds and solutions containing it and is one of the strongest water-stable oxidizing species known.

  5. List of unsolved problems in physics - Wikipedia

    en.wikipedia.org/wiki/List_of_unsolved_problems...

    The following is a list of notable unsolved problems grouped into broad areas of physics. [1]Some of the major unsolved problems in physics are theoretical, meaning that existing theories seem incapable of explaining a certain observed phenomenon or experimental result.

  6. Joint Entrance Examination – Advanced - Wikipedia

    en.wikipedia.org/wiki/Joint_Entrance_Examination...

    The Joint Entrance Examination – Advanced (JEE-Advanced) (formerly the Indian Institute of Technology – Joint Entrance Examination (IIT-JEE)) is an academic examination held annually in India that tests the skills and knowledge of the applicants in physics, chemistry and mathematics.

  7. Chemical purity - Wikipedia

    en.wikipedia.org/wiki/Chemical_purity

    In chemistry, chemical purity is the measurement of the amount of impurities found in a sample. Several grades of purity are used by the scientific, pharmaceutical, and industrial communities. [1] [2] Some of the commonly used grades of purity include:

  1. Ad

    related to: a-level chemistry questions and answers