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  2. Ammonia - Wikipedia

    en.wikipedia.org/wiki/Ammonia

    Ammonia is an inorganic chemical compound of nitrogen and hydrogen with the formula N H 3. A stable binary hydride and the simplest pnictogen hydride, ammonia is a colourless gas with a distinctive pungent smell.

  3. Pi - Wikipedia

    en.wikipedia.org/wiki/Pi

    t. e. The number π ( / paɪ /; spelled out as " pi ") is a mathematical constant that is the ratio of a circle 's circumference to its diameter, approximately equal to 3.14159. The number π appears in many formulae across mathematics and physics.

  4. Gold - Wikipedia

    en.wikipedia.org/wiki/Gold

    Gold is a chemical element; it has the symbol Au (from the Latin word " aurum ") and the atomic number 79. In its pure form, it is a bright, slightly orange-yellow, dense, soft, malleable, and ductile metal. Chemically, gold is a transition metal, a group 11 element, and one of the noble metals.

  5. Analytical chemistry - Wikipedia

    en.wikipedia.org/wiki/Analytical_chemistry

    Analytical chemistry consists of classical, wet chemical methods and modern, instrumental methods. [2] Classical qualitative methods use separations such as precipitation, extraction, and distillation. Identification may be based on differences in color, odor, melting point, boiling point, solubility, radioactivity or reactivity.

  6. Pokémon - Wikipedia

    en.wikipedia.org/wiki/Pokémon

    Pokémon [a] is a Japanese media franchise consisting of video games, animated series and films, a trading card game, and other related media. The franchise takes place in a shared universe in which humans co-exist with creatures known as Pokémon, a large variety of species endowed with special powers. The franchise's target audience is ...

  7. Dinosaur - Wikipedia

    en.wikipedia.org/wiki/Dinosaur

    Birds are avian dinosaurs, and in phylogenetic taxonomy are included in the group Dinosauria. Dinosaurs are a diverse group of reptiles [note 1] of the clade Dinosauria. They first appeared during the Triassic period, between 243 and 233.23 million years ago (mya), although the exact origin and timing of the evolution of dinosaurs is a subject ...

  8. ChatGPT - Wikipedia

    en.wikipedia.org/wiki/ChatGPT

    ChatGPT is a chatbot developed by OpenAI and launched on November 30, 2022. Based on large language models, it enables users to refine and steer a conversation towards a desired length, format, style, level of detail, and language. Successive user prompts and replies are considered at each conversation stage as context.

  9. MrBeast - Wikipedia

    en.wikipedia.org/wiki/MrBeast

    MrBeast. James Stephen " Jimmy " Donaldson [b] (born May 7, 1998), better known by his online alias MrBeast, is an American YouTuber, online personality, entrepreneur, and philanthropist. He is known for his fast-paced and high-production videos, which feature elaborate challenges and large giveaways. [13] With over 250 million subscribers, he ...