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Hybridization and Valence Bond Theory
In this chemistry instructional activity, students use knowledge of valance bonds in order to answer the in depth application of science problems.
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DNA Extraction
Students are able to extract and observe a visible amount of DNA from Escherichia coli cells. They discuss the properties of DNA. Students confirm the presence of DNA by a reaction with an indicator.
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Playing With Polymers
Students explore the world of polymers. For this chemistry lesson, students make polymers and observe their properties. Follow-up questions and extension activities are included.
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Kernel Power" Ethanol Fuel from Corn
Students study why corn is a biodegradable, renewable resource. For this ethanol lesson students build models and observe a chemical reaction.
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Electrolysis of Water
Ninth graders examine the electrolysis of water by completing an experiment. In this water lesson students will explain how hydrogen can be extracted from water and how energy flows through an electrolysis system.
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Nanofibers on Your Clothes
Learners relate the presence of nanofibers in clothing to its ability to repel stains. They observe and contrast the characteristics of nanofiber, Scotchguard treated, and regular fabric then test the stain resistance of each fabric...
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Photosynthesis and Cellular Respiration
In this energy worksheet, students review the processes that create energy for a cell: photosynthesis and cellular respiration. This worksheet has 11 fill in the blank and 14 short answer questions.
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Electrolytes and Colloids Worksheet
For this electrolytes worksheet, students calculate percent composition, determine the electrical conduction of electrolytes, and explain the Tyndall effect. This worksheet has 7 problems to solve.
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Ozone Pollution: Smog Alert
Students examine factors the create smog. In this pollution instructional activity students complete an activity about ozone.
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Stoichiometry
Students research chemical formulas and balance chemical equations. In this chemical equations lesson students complete a class activity on chemical equations and answer questions.
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Through Thick or Thin!!!
Students differentiate between high and low viscosity. Students collect, graph, and interpret data, then quantitatively measure polymer solids. Students experiment with a household example of an emulsion polymer.
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Evaporation and Condensation
Students explore how temperature affects the processes of evaporation and condensation.
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The Water Cycle and Global Warming
Students study the flow of water in the environment. In this water cycle lesson students evaluate the consequences of changes in the water cycle using data.
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Oxygen
Students explore oxygen and its physical and chemical propeties. In this investigative activity students complete several experiments using oxygen.
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Ice Cold
Students design and conduct an experiment to investigate what happens when salt and ice come together and to determine if one form of salt is better for melting ice on steps and sidewalks.
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Pyrotechnics for Pyromaniacs
Students explore how chemistry is associated with the annual celebration of America's independence. They learn what gunpowder is made of, the anatomy of a firework, how noise is made in fireworks and the safety issues.
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Circle of Life
Students consider why we eat and where our food obtains its energy. They illustrate food chains that might be found on an open field, dissect owl pellets, identify the remains of animals in the pellets, watch videos and participate in...
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The Nature Of Dissolving Processes
Students examine the rule of "like dissolves like." They define and describe solutions and solubility models on molecular liquids, ionic solids, and molecular solids.
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Effects of Acid Rain
Third graders explore the concept of acid rain and its effects on ecosystems. They are placed in groups and using a graphic organizer they brainstorm their ideas about what would happen to the ecosystems living within these environments...
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Ecosystem Terms
In this science instructional activity, students identify twenty-four terms in a word search about ecosystems. answers are available in various formats.
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Ingestion
In this ingestion worksheet, 9th graders fill in the blank about ingestion. Students relate the role of saliva, teeth, and the esophagus to their importance in ingestion.
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Stoichiometry
In this stoichiometry instructional activity, learners identify types of reactions, show the products, and balance the equations. Students determine the limiting reagent, theoretical yield, and percent yield for given reactions. This...
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Acid, Base, or Salt?
In this acids and bases worksheet, students read about the differences between acids and bases and then complete a table comparing the characteristics of both. Then students determine if the given statements describe an acid, base, or...
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Ten Multiple-Choice Rate, Ratio, and Proportion Problems
In this rate, ratio, and proportion worksheet, 7th graders solve ten multiple-choice problems. The solutions are provided by clicking on the "show answers" on the bottom of the page.
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