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  2. Puzzle solutions for Sunday, Dec. 1, 2024

    www.aol.com/news/puzzle-solutions-sunday-dec-1...

    Find answers to the latest online sudoku and crossword puzzles that were published in USA TODAY Network's local newspapers. Puzzle solutions for Sunday, Dec. 1, 2024 Skip to main content

  3. Mixture - Wikipedia

    en.wikipedia.org/wiki/Mixture

    [8] [9] Mixtures differ from chemical compounds in the following ways: The substances in a mixture can be separated using physical methods such as filtration, freezing, and distillation. There is little or no energy change when a mixture forms (see Enthalpy of mixing). The substances in a mixture keep their separate properties.

  4. Colloid - Wikipedia

    en.wikipedia.org/wiki/Colloid

    These include electrostatic interactions and van der Waals forces, because they both contribute to the overall free energy of the system. [ 21 ] A colloid is stable if the interaction energy due to attractive forces between the colloidal particles is less than kT , where k is the Boltzmann constant and T is the absolute temperature .

  5. Glossary of chemistry terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_chemistry_terms

    Also acid ionization constant or acidity constant. A quantitative measure of the strength of an acid in solution expressed as an equilibrium constant for a chemical dissociation reaction in the context of acid-base reactions. It is often given as its base-10 cologarithm, p K a. acid–base extraction A chemical reaction in which chemical species are separated from other acids and bases. acid ...

  6. Xenon compounds - Wikipedia

    en.wikipedia.org/wiki/Xenon_compounds

    2 is formed when a mixture of fluorine and xenon gases is exposed to ultraviolet light. [3] The ultraviolet component of ordinary daylight is sufficient. [4] Long-term heating of XeF 2 at high temperatures under an NiF 2 catalyst yields XeF 6. [5] Pyrolysis of XeF 6 in the presence of NaF yields high-purity XeF 4. [6]

  7. Chemical compound - Wikipedia

    en.wikipedia.org/wiki/Chemical_compound

    A chemical formula is a way of expressing information about the proportions of atoms that constitute a particular chemical compound, using chemical symbols for the chemical elements, and subscripts to indicate the number of atoms involved. For example, water is composed of two hydrogen atoms bonded to one oxygen atom: the chemical formula is H 2 O.

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  9. Fill-In (puzzle) - Wikipedia

    en.wikipedia.org/wiki/Fill-In_(puzzle)

    The solver is given a grid and a list of words. To solve the puzzle correctly, the solver must find a solution that fits all of the available words into the grid.