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- https://chem.libretexts.org/Bookshelves/Physical_and_Theoretical_Chemistry_Textbook_Maps/Physical_Chemistry_(Fleming)/01%3A_The_Basics/1.01%3A_The_System_and_the_SurroundingsThe page discusses the Zeroth Law of Thermodynamics, emphasizing the importance of defining key terms like "system" and "surroundings." Various types of systems are identified, such as open, closed, a...The page discusses the Zeroth Law of Thermodynamics, emphasizing the importance of defining key terms like "system" and "surroundings." Various types of systems are identified, such as open, closed, and isolated systems, based on how they allow matter and energy transfer. The distinctions between homogeneous and heterogeneous systems are also outlined, along with the significance of intensive and extensive variables.
- https://chem.libretexts.org/Bookshelves/Inorganic_Chemistry/Supplemental_Modules_and_Websites_(Inorganic_Chemistry)/Chemical_Reactions/Chemical_Reactions_Examples/SolutionsSolving problems of solution stoichiometry requires the concepts introduced in stoichiometry, which also provides the basis for the discussion on reactions. Contributors and Attributions Chung (Peter)...Solving problems of solution stoichiometry requires the concepts introduced in stoichiometry, which also provides the basis for the discussion on reactions. Contributors and Attributions Chung (Peter) Chieh (Professor Emeritus, Chemistry @ University of Waterloo)
- https://chem.libretexts.org/Bookshelves/Introductory_Chemistry/Introductory_Chemistry_(CK-12)/02%3A_Matter_and_Change/2.07%3A_MixtureThis page explains that lemonade is a mixture consisting of lemon juice, water, and sugar, which retain their individual properties unlike compounds. It discusses the distinction between homogeneous m...This page explains that lemonade is a mixture consisting of lemon juice, water, and sugar, which retain their individual properties unlike compounds. It discusses the distinction between homogeneous mixtures, like lemonade, and heterogeneous ones, like rocks. Additionally, it categorizes mixtures into solutions, suspensions, and colloids based on particle size, and notes that mixtures can be separated using physical methods due to differences in the physical properties of their components.
- https://chem.libretexts.org/Courses/Los_Angeles_Trade_Technical_College/Analytical_Chemistry/2%3A_Analytical_Chemistry_2.0_(Harvey)/08%3A_Collecting_and_Preparing_Samples/8.02%3A_Designing_a_Sampling_PlanA sampling plan must support the goals of an analysis. In a qualitative analysis, a sample does not need to be identical to the original substance, provided that there is sufficient analyte to ensure ...A sampling plan must support the goals of an analysis. In a qualitative analysis, a sample does not need to be identical to the original substance, provided that there is sufficient analyte to ensure its detection. In fact, if the goal of an analysis is to identify a trace-level component, it may be desirable to discriminate against major components when collecting samples.
- https://chem.libretexts.org/Bookshelves/Analytical_Chemistry/Analytical_Chemistry_2.1_(Harvey)/07%3A_Obtaining_and_Preparing_Samples_for_Analysis/7.11%3A_Chapter_Summary_and_Key_TermsThis chapter summary focuses on the critical aspects of acquiring a representative sample for analysis. It emphasizes the importance of a well-structured sampling plan, including choices about sample ...This chapter summary focuses on the critical aspects of acquiring a representative sample for analysis. It emphasizes the importance of a well-structured sampling plan, including choices about sample types (e.g., random, systematic), collection methods (e.g., grab, composite), and considerations of the population's nature (homogeneous or heterogeneous).
