This illustration gives you the detailed information on classification of chromatographic methods. Chromatographic methods had 3 main types that is based on stationary, stationary phase format & mobile phase.
Short Description:
CLUE was designed to help students attain a confident, competent, and coherent understanding of basic chemistry, in particular of the chemistry associated with organisms and their origins.
Long Description:
Chemistry, Life the Universe and Everything (CLUE) is a transformed general chemistry curriculum, developed by an interdisciplinary team of a chemist and a molecular biologist, that aims to bring about evidence-based change in general chemistry. General Chemistry is a gateway course for many students intending on careers in scientific, engineering, and health care-related disciplines. While there have been many attempts to improve the outcomes for these students, little has changed over the past 60 years. Recent transformation efforts have focused primarily on incorporating student engagement techniques into the course, rather than considering what it is that is important for students to learn. CLUE is different. CLUE was developed using a design research approach that focuses on scaffolded progressions around four core ideas: structure and properties, bonding and interactions, energy, and change and stability. The course emphasizes causal mechanistic reasoning in order to help students move beyond knowing that, to knowing how and knowing why chemical phenomena occur.
Word Count: 104795
ISBN: 978-1-62610-101-2
(Note: This resource's metadata has been created automatically by reformatting and/or combining the information that the author initially provided as part of a bulk import process.)
In this demonstration, cook a cake using the heat produced when the cake batter conducts an electric current. Because of safety concerns, this activity should be conducted as a demonstration only and learners should be kept at a safe distance.
Sequence of laboratory activities to develop familiarity with geochemistry bench laboratory experimental methods; demonstration of different weathering rates of different Ca-bearing minerals; connection between minerals present in a system and nutrient (Ca) availability
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A lab where students determine the molarity of sugar and citric acid in samples of lemonade.
This exercise uses a number of Excel spreadsheets to calculate mineral formulae from compositional (microprobe) data. Numerous computational models are presented for most mineral groups (e.g. amphiboles, pyroxenes, micas), and students must critically evaluate which of these models is most applicable. Stoichiometry and charge balance are used to determine ferric/ferrous ratios--which is important for further applications such as geothermobarometry. Students are also asked directed questions about: compositional variation of the rock-forming mineral groups; representative complete, limited, and coupled solid solutions; site occupancy of major elements, as determined by the various computational models used; graphical representation of the calculated mineral formulae; and the composition and significance of certain varieties of these rock-forming minerals are addressed.
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This is a spreadsheet that I use in petrology to walk students through calculating Rb-Sr isochrons and talking about isotope heterogeneity and sampling at various scales. The example exercise is the Tuolumne intrusive series. The file, available for download below, contains workbooks (see different tabs) with example isochrons and a spreadsheet of data for the homework problems.
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Spreadsheets Across the Curriculum activity. In advance of an actual lab activity, students virtually simulate the calibration of a laboratory micropipettor. QL: Accuracy and precision.
This is Experiment #1 in the Analytical Chemistry Lab sequence at MSU Denver. It walks students through the calibration of three pieces of glassware and a micropipette. The Excel template is populated with prior student data so that calculations can be completed before lab and then updated with new data during lab. This allows for a mastery approach to the calibration, where students are able to repeat the calibration until the required tolerance is met.
Do you know how many calories are in a macadamia nut? This video segment highlighting a Calorimetry experiment will give you the answer.
Today's episode dives into the HOW of enthalpy. How we calculate it, and how we determine it experimentally...even if our determinations here at Crash Course Chemistry are somewhat shoddy.
Chapters:
Hess' Law
Calorimeter
Calorimetry
Specific Heat Capacity
Calorimetry Sources of Error
In this part of the MRE scenario, students measure the enthalpy of a reaction.
In this part of the MRE scenario, students determine change in the enthalpy of a reaction as the concentration of reactants are varied.
Link the college or university operations with local ecology. In this study, students use a tool from urban ecology, the nitrogen budget, to research the inputs, outputs and subsytem transfers of nitrogen on the college or university campus.
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Students will begin this inquiry-based lesson by accessing their prior knowledge about the distinguishing characteristics of different substances. Using ideas from the students, the teacher will create a list of physical and chemical properties that can be used to recognize different substances. Next, the teacher will assist the students in planning an investigation that will test methods to determine the identity of substances based on their characteristic properties. Lastly, students will carry out the investigation they planned with the aim of identifying "mystery" substances using their unique physical and chemical properties. This lesson results from a collaboration between the Alabama State Department of Education and ASTA.
Small groups of students examine a candle to consider its chemical properties. Class discussion follows to consider macro vs. molecular events, energy, phase changes, etc.
The purpose of this exercise is to understand the capability and limitations of several instruments (AA, ICP-OES, ICP-MS) used for geochemical analysis. Students compare and contrast the cost, detection limits, etc. of these instruments.
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This module provides an introduction to the concept of carbohydrates as a macronutrient. The biochemical structure of simple sugars and complex carbohydrates are compared and contrasted.
This interactive animation focuses on the carbon cycle and includes embedded videos and captioned images to provide greater clarification and detail of the cycle than would be available by a single static visual alone.
In this activity, students develop concept maps of the carbon cycle through a die-rolling game that simulates carbon reservoirs and fluxes. By the end of this activity, students should be able to describe and explain how the carbon cycle has changed in the last 250 years.