Howard Hughes Medical Institute
Winogradsky Columns: Microbial Ecology in the Classroom
Winogradsky columns are ideal for observing the role of bacteria and other microorganisms in an ecosystem. This student activity guide is complete with data tables for observations and analysis questions for processing what was observed....
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Activity #19 The Density of Alka Seltzer Gas
Students (teachers) complete the activity, they should not come in contact with Alka-Seltzer. They comprehend that the density of a gas can be calculated from its mass and volume. Pupils calculate the volume of gas generated by...
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Limestone
In this limestone activity, students name three sources of calcium carbonate, write the chemical formula, and determine the three elements found in calcium carbonate. This activity has 7 short answer and 3 problems to solve.
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Stoichiometry
In this stoichiometry worksheet, students calculate balance the chemical equations and then calculate the moles needed to complete or activate the chemical reaction. Students also calculate the volume or grams needed for each chemical...
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Stoichiometry
For this stoichiometry worksheet, students use balanced equations for chemical reactions to determine the percent yield and the mass of product produced. This worksheet has five problems to solve.
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Percentage Composition and Empirical & Molecular Formula
In this compounds activity, students determine the empirical and molecular formulas for given compounds. This activity has 10 problems to solve.
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Learning Outcomes
In this science instructional activity, students explore the learning outcomes for a unit on chemical reactions. Students define 60 vocabulary words and answer a list of questions for each topic.
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Temperature and the Tomato
You will need a photovoltaic system and monitor at your school in order to obtain all of the data required to thoroughly implement this lesson. Your class monitors daily temperature and insolation amounts over a two week span of time....
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Percentage Composition
In this chemical compounds worksheet, students determine the empirical formula or the molecular formula for the compounds given. Students calculate percent composition. This worksheet has 10 problems to solve.
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Conserving Chemical Resources
Students balance chemical equations and solve for gram to mole ratios.
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Properties
In this properties worksheet, students classify each of the properties given as either extensive or intensive and as either physical or chemical. This worksheet has 1 graphic organizer and 8 fill in the blank questions.
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Word Equation Questions
In this chemical equations worksheet, high schoolers are given 37 word equations and they complete each by filling in the product or reactant that is missing using words.
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Esters: The Secret of Natural and Synthetic Fragrances
Students investigate esters, make an ester and detect esters in natural foods and plants. For this esters lesson plan, students detect smells of hidden objects, produce an ester using peas, brown sugar and apple and demonstrate how to...
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Pesticides and Eggshell Thinning.
Students analyze the calcium content of egg shells as an introduction to the toxic effects of pesticides on biological systems.
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Water Resource Engineering
Students examine solubility and the significance of water. In this aqueous solution lesson students complete a lab activity on soil profiles.
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TESI 04 Lesson Plan
Students write and balance five chemcial equations which have been observed throughout the process of completing the experiment. They use vacuum filtration to recover suspeneded particals from a colloidal suspension. Students correctly...
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Chemical Equations
In this chemical equations worksheet, students balance equations. This worksheet has 22 chemical equations to write out and balance.
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Equilibrium Review Sheet
In this equilibrium worksheet, learners answer 5 questions about reactions reaching equilibrium, the concentration of the products and reactants when they reach equilibrium, and the effects of temperature changes, quantities of reactants...
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Identifying Reaction Types
In this reactions activity, students are given nine chemical reactions to identify as single replacement, double replacement, synthesis or decomposition reactions.
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Molarity
In this molarity worksheet, students are given the equation to find moles per liter of solution. They solve ten problems finding molarity of solutions, moles needed to make particular molar solutions and mass needed to make particular...
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A Salt and Battery
For this battery worksheet, students read about oxidation-reduction reactions and voltaic cells. They are given a diagram of an electrochemical cell and they answer four questions using the cell. They also identify the anode given two...
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Forcing Electrons to Move
In this electrolytic cell worksheet, high schoolers read about car batteries and how they produce electricity for cars to run. They answer six questions about electrolytic cells and oxidation-reduction reactions.
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Molarity and Stoichiometry
In this molarity worksheet, students apply the definition of molarity to the given balanced equations. This worksheet has 4 problems to solve.
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Solutions Review
In this solutions worksheet, students review the properties of solutions, the polarity of molecules, molarity, and solubility curves. This worksheet has 8 short answer questions and 15 problems to solve.
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