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  2. Combustibility and flammability - Wikipedia

    en.wikipedia.org/wiki/Combustibility_and...

    A combustible material is a material that can burn (i.e., sustain a flame) in air under certain conditions. A material is flammable if it ignites easily at ambient temperatures. In other words, a combustible material ignites with some effort and a flammable material catches fire immediately on exposure to flame.

  3. Thematic elements - Wikipedia

    en.wikipedia.org/wiki/Thematic_elements

    Subject matter. These thematic elements may include abortion, addiction, animal cruelty, child abuse, corruption, coming-of-age issues, non-violent crimes , ...

  4. List of sovereign states - Wikipedia

    en.wikipedia.org/wiki/List_of_sovereign_states

    The following is a list providing an overview of sovereign states around the world with information on their status and recognition of their sovereignty. The 205 listed states can be divided into three categories based on membership within the United Nations System : 193 UN member states , [1] 2 UN General Assembly non-member observer states ...

  5. Wikipedia:What is a featured picture?/Example subject matter

    en.wikipedia.org/wiki/Wikipedia:What_is_a...

    A major attribute of a featured picture is that it is a photograph, diagram, image or animation which is among the best examples of a given subject that the encyclopedia has to offer. As these examples show, a featured picture is not always required to be aesthetically pleasing; it might be shocking, impressive, or just highly informative.

  6. List of Advanced Level subjects - Wikipedia

    en.wikipedia.org/.../List_of_Advanced_Level_subjects

    A. Accounting; Afrikaans; Ancient History; Art and Design; Arabic; B. Bengali; Biblical Hebrew; Biblical Studies; Biology; Built Environment; Business; C. Chemistry ...

  7. Three certainties - Wikipedia

    en.wikipedia.org/wiki/Three_certainties

    Three certainties. The three certainties compose a rule within English trusts law on the creation of express trusts that, to be valid, the trust instrument must show certainty of intention, subject matter and object. "Certainty of intention" means that it must be clear that the donor or testator wishes to create a trust; this is not dependent ...

  8. List of Chuck Close subjects - Wikipedia

    en.wikipedia.org/wiki/List_of_Chuck_Close_subjects

    List of Chuck Close subjects. Chuck Close was an American painter and photographer who primarily created massive-scale portraits. Close's portraits had simple titles, using only the subject's first name. Many of his subjects were friends who, like Close, were also artists, or dealers and collectors of art; others were simply friends or family ...

  9. List of chemical elements - Wikipedia

    en.wikipedia.org/wiki/List_of_chemical_elements

    List of chemical elements. 118 chemical elements have been identified and named officially by IUPAC. A chemical element, often simply called an element, is a type of atom which has a specific number of protons in its atomic nucleus (i.e., a specific atomic number, or Z ). [1]