Curated OER
Classifying Matter: A Concept Map
In this classifying matter worksheet, students create a concept map to show the relationships between given terms such as elements, matter, substances and solutions.
Curated OER
pH of Solutions
In this pH activity, students describe the pH scale and explain the initials "pH." Students classify solutions as acidic, neutral, or basic. Students name compounds as acids or bases. This activity has 3 short answer questions and 5 fill...
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Solutions
In this solutions worksheet, students solve twelve problems including calculating products made in reactions, determining limiting reagents, calculating molarity of solutions, determining percent composition, and finding volumes and...
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Graphing Solutions
In this graphing solutions worksheet, 9th graders solve 13 various types of problems. First, they find the solution of each systems by graphing on the coordinate plane provided. Then, students solve each systems of equations...
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Finding Satisfactory Solutions
Students decide where to locate ice cream stands in a town so that no one has to travel too far to buy a treat. The problem-solving strategies for this problem give students a chance to decide what makes a solution satisfactory.
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Salty Solutions
Young scholars measure salt content in water. They determine salt content of four samples using a hydrometer.
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Reaction Kinetics
In this chemical reactions worksheet, students determine the reaction rate for various reactions, write balanced equations, create graphs showing the reaction over time, and calculate the activation energy and potential energy. This...
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Chemistry: pH Probe
Students conduct a pH probe of various household products including both bases and acids. In groups, they use litmus paper to test such liquids as amonia, vinegar, and detergent to discover which are acids and which are bases. Finally,...
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How Can Mixtures Be Separated?
In this mixtures worksheet, students brainstorm the problems and possible solutions of how to separate mixtures. This worksheet is a graphic organizer.
Curated OER
Teaching about Conductivity
Students explore conductivity and productivity in aquatic systems.
Other
International Burch University: The Simplex Method
A downloadable PowerPoint presentation explaining the steps of the simplex method and providing several examples.
Georgia State University
Georgia State University: Hyper Physics: Precipitation Reactions
This site from Georgia State University discusses the precipitation reactions and deals with the lead iodide product. Links are provided to information on double replacement reactions as well as ionic compounds. Not too in-depth, this is...
Pennsylvania State University
Penn State Univ.: Quadratic Functions/sample Problem
Penn State University offers a sample problem finding roots of a quadratic function.
University of Virginia
University of Virginia: More on Temperature and Solubility
Lab set up to compare the effect of temperature on the solubility of two solutes (NaCl and KNO3).