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  2. Compound subject - Wikipedia

    en.wikipedia.org/wiki/Compound_subject

    A compound subject consists of two or more individual noun phrases coordinated to form a single, longer noun phrase. Compound subjects cause many difficulties in compliance with grammatical agreement between the subject and other entities (verbs, pronouns, etc.). These issues also occur with compound noun phrases of all sorts, but the problems ...

  3. Chemical substance - Wikipedia

    en.wikipedia.org/wiki/Chemical_substance

    A chemical compound is a chemical substance that is composed of a particular set of atoms or ions. Two or more elements combined into one substance through a chemical reaction form a chemical compound. All compounds are substances, but not all substances are compounds.

  4. Organic chemistry - Wikipedia

    en.wikipedia.org/wiki/Organic_chemistry

    Category. v. t. e. Organic chemistry is a subdiscipline within chemistry involving the scientific study of the structure, properties, and reactions of organic compounds and organic materials, i.e., matter in its various forms that contain carbon atoms. [1] Study of structure determines their structural formula.

  5. Chemistry - Wikipedia

    en.wikipedia.org/wiki/Chemistry

    Chemistry is the scientific study of the properties and behavior of matter. [1] It is a physical science within the natural sciences that studies the chemical elements that make up matter and compounds made of atoms, molecules and ions: their composition, structure, properties, behavior and the changes they undergo during reactions with other substances.

  6. Sentence clause structure - Wikipedia

    en.wikipedia.org/wiki/Sentence_clause_structure

    Example: Abdul is happy. Jeanne is a person. I am she. Subject + Verb (transitive) + Indirect Object + Direct Object Example: She made me a pie. This clause pattern is a derivative of S+V+O, transforming the object of a preposition into an indirect object of the verb, as the example sentence in transformational grammar is actually "She made a ...

  7. Dependent clause - Wikipedia

    en.wikipedia.org/wiki/Dependent_clause

    Dependent clause. A dependent clause, also known as a subordinate clause, subclause or embedded clause, is a certain type of clause that juxtaposes an independent clause within a complex sentence. For instance, in the sentence "I know Bette is a dolphin", the clause "Bette is a dolphin" occurs as the complement of the verb "know" rather than as ...

  8. Glossary of chemistry terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_chemistry_terms

    The study of the absorption or release of heat during a chemical reaction. thermodynamic stability. The condition of a system being in its lowest energy state with its environment (equilibrium). thermodynamics. The study of the effects of changing temperature, volume or pressure (or work, heat, and energy) on a macroscopic scale.

  9. Compound interest - Wikipedia

    en.wikipedia.org/wiki/Compound_interest

    Compound interest. Compound interest is interest accumulated from a principal sum and previously accumulated interest. It is the result of reinvesting or retaining interest that would otherwise be paid out, or of the accumulation of debts from a borrower.