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  2. Lemon battery - Wikipedia

    en.wikipedia.org/wiki/Lemon_battery

    Many fruits and liquids can be used for the acidic electrolyte. Fruit is convenient, because it provides both the electrolyte and a simple way to support the electrodes. The acid involved in citrus fruits (lemons, oranges, grapefruits, etc.) is citric acid. The acidity, which is indicated by the measured pH, varies substantially.

  3. Combustibility and flammability - Wikipedia

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

    Combustibility is a measure of how easily a substance bursts into flame, through fire or combustion. This is an important property to consider when a substance is used for construction or is being stored.

  4. Science fair - Wikipedia

    en.wikipedia.org/wiki/Science_fair

    A science fair or engineering fair is an event hosted by a school that offers students the opportunity to experience the practices of science and engineering for themselves. In the United States, the Next Generation Science Standards makes experiencing the practices of science and engineering one of the three pillars of science education.

  5. Flash point - Wikipedia

    en.wikipedia.org/wiki/Flash_point

    In other projects Wikidata item; Appearance. move to sidebar hide ... Vegetable oil (canola) 327 °C (621 °F) 424 °C (795 °F) [10] Biodiesel >130 °C (266 °F)

  6. The amount of water needed varies by person, weight, diet, activity level, clothing, and the ambient heat and humidity. Water does not actually need to be drunk in pure form, and can be derived from liquids such as juices, tea, milk, soups, etc., and from foods including fruits and vegetables. [356] [357]

  7. Combustibility - Wikipedia

    en.wikipedia.org/?title=Combustibility&redirect=no

    Language links are at the top of the page. Search. Search

  8. Chemical property - Wikipedia

    en.wikipedia.org/wiki/Chemical_property

    A chemical property is any of a material's properties that becomes evident during, or after, a chemical reaction; that is, any attribute that can be established only by changing a substance's chemical identity. [1]

  9. Frog battery - Wikipedia

    en.wikipedia.org/wiki/Frog_battery

    Matteucci's frog battery, 1845 (top left); Aldini's frog battery, 1818 (bottom); apparatus for controlled exposure of gases to frog battery (top right). A frog battery is an electrochemical battery consisting of a number of dead frogs (or sometimes live ones), which form the cells of the battery connected in a series arrangement.