Items were developed based on an existing learning progression for acid–base chemistry. We used the Rasch rating scale model for validation and to gain understanding of how students at different ability levels conceptualize the topic. We then used latent class analysis (LCA) to place students ...
Chemistry is an essential branch of science that explores matter’s composition, structure, and properties and the changes it undergoes during chemical reactions. It plays a vital role in daily life, from medicine and environmental sustainability to technological innovation and industry. When it comes ...
As the exhaled air from the suspect flows past one side of the fuel cell, the platinum oxidizes any alcohol in the air to produce acetic acid, protons and electrons. The electrons flow through a wire from the platinum electrode. The wire is connected to an electrical-current meter and to ...
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Learning how to balance equations for chemistry is important for the chemistry class. The equation for chemistry has to be balanced to make sure it...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our experts can answer your tough ...
Learn how to calculate the pH a strong acid-strong base solution, and see a few examples that walk through sample problems step-by-step for you to improve your chemistry knowledge on calculating the pH of a strong acid-strong base solution.
Learn how to find the predominant form of an acid or base, and see examples that walk through sample problems step-by-step for you to improve your chemistry knowledge and skills.
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We propose explicit and implicit approaches for the teaching of acid-base chemistry based on research into the history and nature of science (NoS). To support these instructional proposals, we identify four rationales for students to understand acid-base processes: daily life, socio-scientific, curr...