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2005 U.S. National Chemistry Olympiad - Local Section Exam
National Chemistry Olympiad tests are released after their use each year, since they cannot use them again for this event. The result: outstanding comprehensive assessment resources for general chemistry classes! This 2005 version covers...
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Units in Thermochemical Calculations
High schoolers study how to complete thermochemical equations. In this equation lesson students learn how to manipulate equations to calculate energy changes and reactions.
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Thermodynamics
In this thermodynamics worksheet, students calculate the enthalpy change and free energy change for given reactions. students describe what happens to the entropy of a system and describe how its enthalpy changes. This worksheet has 20...
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Energy Worksheet
In this energy worksheet, students calculate the enthalpy of chemical reactions to answer 9 problems. They determine whether the reaction is exothermic or endothermic.
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Calorimetry
For this calorimetry worksheet, students determine the specific heat of an unknown liquid. Students calculate the change in enthalpy for given reactions. This worksheet has 20 problems to solve.
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Heat of Reaction
In this reactions worksheet, students define enthalpy, heat of formation, and Hess's Law. Students determine how many kilojoules are released during specific reactions. This worksheet has 6 short answer questions and 11 problems to solve.
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Challenging Thermodynamics Problems
In this thermodynamics learning exercise, students apply Hess's Law and review internal energy theory and heat capacity theory. Students use Boltzmann formula to calculate entropy and calculate the change in free energy. This learning...
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Energy in Chemical Reactions
For this chemical reaction worksheet, students determine if reactions are exothermic or endothermic. Students define enthalpy and calculate how much heat is released or absorbed during reactions. This worksheet has 1 matching, 1 fill in...
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Hess's Law
In this reactions learning exercise, students use Hess's Law to calculate the heat gained or lost by different reactions. Students determine if the reaction would occur spontaneously at a given temperature. This learning exercise has 9...
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Energy and Enthalpy
In this energy worksheet, students calculate how much energy is required to heat solutions. This worksheet has 4 problems to solve.
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Enthalpy
In this enthalpy worksheet, learners use the bond energy to calculate the change in heat for the reaction. This worksheet has 2 problems to solve.
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Energy and Enthalpy
In this energy worksheet, students calculate the specific heat and the melting point of titanium. Students calculate the energy released and compare the energetics for given reactions. This worksheet has 4 word problems.
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Hess's Law Worksheet
Challenge young scholars' understanding of thermochemistry with this skills-practice worksheet on Hess's Law. Given a series of five multi-step chemical reactions, students must determine the overall change in entropy for each.
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Thermochemistry Practice
In this thermochemistry worksheet, students solve six problems identifying changes in heat, heat of formation and the amount of work done given various conditions of an equation.
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Thermochemistry
In this thermochemistry worksheet, students answer 6 questions about specific heat, heat capacity and molar heat capacity. They also complete a crossword puzzle given 20 clues about topics related to thermochemistry. Students solve a...
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Thermochemistry
In this thermochemistry instructional activity, students calculate the enthalpy of vaporization as well as the write the thermochemical expression for the production of the chemical reaction.
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AP Chemistry Chapter 9
In this AP Chemistry worksheet, students apply concepts of electron configuration to accurately answer the questions provided. Students also draw Lewis structures of the given elements. Students estimate the enthalpy of formation as well...
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Spontaneity, Disorder and Entropy
For this physical and chemical change worksheet, students calculate the entropy change involved in different chemical changes. This worksheet has 4 problems to solve.
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Entropy and Free Energy
In this entropy worksheet, students define entropy and determine if reactions are exothermic or would occur spontaneously. This worksheet has 10 problems to solve.
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Chemical Solutions
In this chemical solutions worksheet, Students determine the significance of the critical point in a phase diagram and rank solutions from weakest to strongest solute-solvent interaction. This worksheet has 4 problems to solve.
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Exothermic and Endothermic Changes
Young scholars define and identify endothermic/exothermic reactions. Using a series of experiments, they construct and interpret potential energy diagrams for their reactions.
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Thermodynamic Reaction Worksheet
In this thermodynamics instructional activity, students predict the change in reaction values for the 14 thermodynamic reactions given.
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Chemistry Wk 2
In this chemistry worksheet, students calculate the freezing point of a given solution. Students calculate the final temperature and state of the water in a given problem. Students solve several problems provided.
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Hess's Law Cycle
For this chemistry worksheet, learners write the balanced equation for the formation of one mole of fat from its elements under standard conditions. Then they write the balanced equation of the combustion of this fat. Students use Hess's...