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  2. List of chemistry mnemonics - Wikipedia

    en.wikipedia.org/wiki/List_of_chemistry_mnemonics

    A mnemonic is a memory aid used to improve long-term memory and make the process of consolidation easier. Many chemistry aspects, rules, names of compounds, sequences of elements, their reactivity, etc., can be easily and efficiently memorized with the help of mnemonics.

  3. Education in Chile - Wikipedia

    en.wikipedia.org/wiki/Education_in_Chile

    The law establishes free access to the last two levels of pre-school. [4] A constitutional reform in 2013 called for the law to extend free access to four levels, and make the last one mandatory and a prerequisite to enter primary school. [5] The coverage for pre-school in 2009 was 37.42% (for children aged 0 to 5) and 44.96% (for persons of ...

  4. Educational stage - Wikipedia

    en.wikipedia.org/wiki/Educational_stage

    8–9: Third grade; 9–10: Fourth grade; 10–11: Fifth grade; 11–12: Sixth grade; 12–13: Seventh grade; The second school is ungdomsskole (youth-school). At this level the students are rated with grades in each subject, in addition to behavior and orderliness: 13–14: Eighth grade; 14–15: Ninth grade; 15–16: Tenth grade

  5. Eleventh grade - Wikipedia

    en.wikipedia.org/wiki/Eleventh_grade

    In Queensland, Year 11 students are the youngest in the country, as they usually enter at age fifteen. In New South Wales, Year 11 is the shortest year as it only lasts three whole terms. Students commence Year 12 in Term 4 instead of completing a fourth term of Year 11. Year 11 is followed by Year 12, the final year of high school.

  6. Tosyl group - Wikipedia

    en.wikipedia.org/wiki/Tosyl_group

    Tosyl group (blue) with a generic "R" group attached Tosylate group with a generic "R" group attached. Note the extra oxygen, compared to plain tosyl. In organic chemistry, a toluenesulfonyl group (tosyl group, abbreviated Ts or Tos [nb 1]) is a univalent functional group with the chemical formula −SO 2 −C 6 H 4 −CH 3.

  7. Curriculum - Wikipedia

    en.wikipedia.org/wiki/Curriculum

    A 52-week curriculum for a medical school, showing the courses for the different levels. In education, a curriculum (/ k ə ˈ r ɪ k j ʊ l ə m /; pl.: curriculums or curricula / k ə ˈ r ɪ k j ʊ l ə /) is the totality of student experiences that occur in an educational process.

  8. Fifth grade - Wikipedia

    en.wikipedia.org/wiki/Fifth_grade

    Fifth grade (also 5th Grade or Grade 5) is the fifth or sixth year of formal or compulsory education. In the United States, this is mostly the last grade of primary school, but for some states, it could be the first year of middle school. Primary school generally goes from Kindergarten and ends in fifth or sixth grade. Students in fifth grade ...

  9. Period (periodic table) - Wikipedia

    en.wikipedia.org/wiki/Period_(periodic_table)

    In the periodic table of the elements, each numbered row is a period.. A period on the periodic table is a row of chemical elements.All elements in a row have the same number of electron shells.