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Lead and Mercury Ion Catalase Inhibition
Students participate in a laboratory investigation in which they observe the effect of temperature and pH on enzyme activity. Students also examine exposure to heavy metal ions and the effect that may have on enzyme activity.
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Acids, Alkalis, and Salts
In this acids worksheet, students review the definition of acids, bases, and salts. Students describe the differences between acids and alkalis and define neutralization. This worksheet has 2 short answer and 1 problem to solve.
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Limiting Reactant Problems
In this chemical reaction worksheet, students determine the limiting reactant in the equations given plus determine the amount of moles of product produced. This worksheet has 6 problems to solve.
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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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Interpreting Chemical Formulas
In this chemical formulas worksheet, students determine the number and type of each atom and the total number of atoms for the given formulas. Students complete 10 problems.
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Word Equation Questions
In this chemical equations worksheet, students 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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Solubility Curves
In this solubility curve worksheet, students are given a solubility curve for a variety of compounds and they answer 17 questions about the solubility of the compounds shown.
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Chemical Equations
In this chemical equations worksheet, learners balance equations. This worksheet has 22 chemical equations to write out and balance.
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Six Types of Reactions
In this types of chemical reactions worksheet, students fill in 5 blanks with the proper type of chemical reaction described in the sentence. Students balance 5 equations and identify the type of chemical reaction for each equation.
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Crystals
Fourth graders use mucilage glue and magnesium sulfate to make crystals. They mix the ingredients, place a drop on a glass slide and observe the forming crystals.
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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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Solubility
In this solubility worksheet, students calculate the final concentrations of the ions involved in a chemical mixture. Students calculate the solubility of different compounds. This worksheet has 13 problems to solve.
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Chemical Reactions Quiz Review Sheet
In this chemical reactions learning exercise, learners balance an equation, determine the type of reaction, and write the net ionic equation. This learning exercise has 5 problems to solve.
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Chemicals in Your Life
In this chemicals worksheet, students fill in 61 blanks of statements comparing the chemicals used in farming and the chemicals found in medicines and food.
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Heat of Formation
In this reactions worksheet, learners calculate the heat of reaction for given chemical reactions. This worksheet has 3 problems to solve.
Encyclopedia of Earth
Encyclopedia of Earth: Physics & Chemistry: Nitrate
Discusses the chemistry of nitrate, the negative agricultural effects of too much nitrate in soil and in water sources, its toxicity to plants and livestock, and the impact on human health.