Build an atom out of protons, neutrons, and electrons, and see how the element, charge, and mass change. Then play a game to test your ideas!
Student groups construct simple conductivity probes and then integrate them into two different circuits to test the probe behavior in solutions of varying conductivity (salt water, sugar water, distilled water, tap water). The activity culminates with student-designed experiments that utilize the constructed probes. The focus is to introduce students to the fabrication of the probe and expose them to two different ways to integrate the probe to obtain qualitative and quantitative measurements, while considering the application and utility of a conductivity probe within an engineering context. A provided handout guides teams through the process: background reading and questions; probe fabrication including soldering; probe testing and data gathering (including circuit creation on breadboard); probe connection to Arduino (including circuit creation and code entry) and a second round of testing and data gathering; design and conduct their own lab experiments that use the probes; online electrolyte/nonelectrolyte reading, short video, comprehension check and analysis questions.
This activity is a hands-on building of atoms of elements 1-20.
Students learn about atoms and their structure (protons, electrons, neutrons) — the building blocks of matter. They see how scientific discoveries about atoms and molecules influence new technologies developed by engineers.
This is an lesson about spectrographs. Learners will build and decorate their own spectrographs using simple materials and holographic diffraction gratings. After building the spectrographs, they observe the spectra of different light sources. Requires advance preparation to spray-paint the inside of the containers black the day before construction. The activity is part of Project Spectra, a science and engineering program for middle-high school students, focusing on how light is used to explore the Solar System.
This is a hands-on activity to assess the students understanding of peptide and disulfide bonds formed during protein synthesis. Students demonstrate the process of dehydration synthesis by combining amino acids through peptide bonds creating molecules of water, and one protein amino acid strand. It can also be used to assess students understanding of the process of translation.
A zip line is a way to glide from one point to another while hanging from a cable. Design and create a zip line that is safe for a hard-boiled egg. After designing a safety egg harness, connect the harness to fishing line or wire connected between two chairs of different heights using a paper clip. Learn to improve your zip line based on data. Attach a motion sensor at the bottom of your zip line and display a graph to show how smooth a ride your egg had!
Create a butterfly using chromatography. Art and science craft project.Activity from Weekly STEM in a Bag. Colorado Americorp agents in Araphahoe, Denver, Garfield, Larimer, and Weld Counties. Work supported by the Corporation for National and Community Service under Americorps grant number 18AFHCO0010008. Opinions or points of view expressed in this lesson are those of the authors and do not necessarily represent the official position of or a position that is endorsed by the Corporation or the Americorps program. This resource is also available in Spanish in the linked file.
The assignment pre-tests student understanding of the CCD, lysocline, calcareous ooze, and the deposition of marine sediments near mid-ocean ridges and ocean basins.
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This textbook is an adaptation of the Saylor Introduction to Chemistry book customized for CH 104 at Central Oregon Community College. Low-cost print available: http://www.lulu.com/shop/forrest-towne/introduction-to-chemistry/paperback/product-24034383.html
Upon completing this course students will:
Interpret the periodic table to describe elements of atomic structure for the elements and to make predictions about properties based on the position of elements on the table.
Apply atomic theory in describing atomic structure, making predictions about bonding and compound formation, and interpreting chemical reactions.
Construct and interpret Lewis structures as models for ionic and covalent compounds.
Describe ionic and covalent bonding and distinguish between the two, including descriptions of substances of each type at the observable scale.
Solve problems using dimensional analysis involving chemical substances and reactions, drawing on understanding of the mole concept, formula masses and reaction stoichiometry.
Read, write, and interpret balanced chemical equations, using proper equation syntax and standard symbolism to link such descriptions to phenomena that occur at the observable scale.
Interpret and carry out a set of written experimental instructions and then to convey the experimental results in a laboratory report.
Apply kinetic-molecular theory to describe solids, liquids, and gases.
Recognize acids and describe acidity according to the Bronsted-Lowry definition.
Use scientific (inductive) reasoning to draw appropriate conclusions from data sets or theoretical models. Characterize arguments as scientific, or not scientific.
Make measurements and operate with numbers properly to convey appropriate levels of certainty when drawing conclusions from experimental data. Identify patterns in data by graphical means.
Course Goals and Learning Objectives. The goal of this course is to give the student a basic understanding of chemistry and physical processes in the context of food chemistry, metabolism and cooking. The course also necessarily makes connections to the future sustainability of food and water. We aim to prepare the student for the increasingly urgent and complex national dialogue on the interrelated topics of global climate change, energy, pollution, extinction and the food supply. The specific objectives of this course are to provide the student with the basic vocabulary of chemistry, and a basic understanding of the experimental process as it relates to food chemistry and cooking.
CK-12 Physical Science Concepts covers the study of physical science for middle school students. The 5 chapters provide an introduction to physical science, matter, states of matter, chemical interactions and bonds, chemical reactions, motion and forces, and the types and characteristics of energy.
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.
Western Mining History presents a short history of the Harmony Borax Works in Death Valley, California. Western Mining History is an historical site that provides databases, information on mining, mining towns, gold and Photos and maps of the western United States. Consider becoming a member or making a donation to help further the work of the site.
Haz tus propias sales de baño relajantes. Actividad de Bolsa de STEM Semanal. Agentes de Colorado Americorp en los condados de Araphahoe, Denver, Garfield, Larimer y Weld. Trabajo apoyado por la Corporación para el Servicio Nacional y Comunitario bajo el número de subvención 18AFHCO0010008 de Americorps. Las opiniones o puntos de vista expresados en esta lección pertenecen a los autores y no representan necesariamente la posición oficial o una posición respaldada por la Corporación o el programa Americorps.