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Activity #19 Oxygen For Yeast
Students observe and record what occurs when yeast is added to hydrogen peroxide. They indicate why a chemical reaction (decompostion) must have occurred during the experiement. Pupils explain why yeast was used. Students comprehend the...
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A Limnology Study of Drainage Ditches
Students chemically test water, observe microscopic organisms in the classroom, and screen the sample for macroinvertebrates. They design a reporting sheet that list all the items to be tested and a space to record the results.
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Measuring pH
Students perform an experiment which will illustrate how to measure the approximate pH of chemicals in water using a pH indicator. They understand that a pH indicator is a chemical that changes color when it comes in contact with acids...
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Amylase Enzyme In Saliva
Students test for amaylase enzyme in a variety of substances. Student pairs perform a series of tests to determine how long it takes the starch sample to change to sugar molecules and the blue color to disappear when various saliva...
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Natural Indicators: How Do They Work?
Students describe characteristics and common uses of acids and bases. They describe the role of natural indicators in the chemistry of acids and bases after testing and making observations on a variety of plant extracts. Students observe...
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It's in the Bag!
Eighth graders measure temperature changes and make drawings of the interactions between matter and energy. By measuring the temperature students can conclude if there are changes in levels of energy.
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From One End to the Other
Seventh graders become more familiar with how our food is broken down mechanically and chemically. They also trace the food through the alimentary canal.
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Shake, Rattle and Roll
Students compare the weathering of materials. in this weathering lesson, students experiment with the chemical and physical weathering of different materials. Students use salt and water as an example of how weathering occurs.
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How Can We Calculate an Equilibrium Constant?
High schoolers explain how equilibrium quantities are changed by temperature, pressure or different concentration of substances. They work together to complete equilibrium equations. They identify the relationship between absorption of...
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Le Chatelier's Principle
In this chemical equilibrium worksheet, students review Le Chatelier's Principle and predict the direction of equilibrium shift for different changes to a chemical reactions. Students also review enthalpy and entropy. This worksheet has...
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Plop! Plop! Fizz! Fizz!
Fourth graders study physical and chemical weathering. They explain how the processes of weathering and erosion change and move materials that become soil. They create a K-W-L chart to show what they know and list what else they would...
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Thermochemistry
In this thermochemistry worksheet, 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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Ozone
Students locate the ozone layer of the atmosphere. They explain natural formation of ozone. They list chemicals that react with ozone. They explain how CFC's destroy ozone.
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Bellwork for Week 11
In this bellwork instructional activity, students answer questions about chemical and mechanical weathering, particle size, and the soil profile at the start of class.
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Biodiesel Combustion and Its Influences in NOx Emissions
Tenth graders evaluate the physical mechanisms that cause a change in NOx emissions. For this combustion lesson, 10th graders participate in a research project. Students create a presentation of their findings.
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Structure-Property Relationships
High schoolers explore the structure and property changes of water through videos and classroom discussion. They are introduced to atomic arrangement of solids by looking closely at carbon in different forms, such as graphite and...
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Where Does the Green Go?
Pupils investigate why green leaves change colors in the fall. They press leaves and write a poem, create a chlorophyll leaf print, take a nature walk, and create a leaf shape poster.
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Its Getting Thinner and Thinner
Learners design posters on the ozone to be judged. They design a board game on the depletion of the ozone and list the layers of the atmosphere. They construct a collage of the atmosphere into layers according to the way temperature...
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A Drug Encounter
Children discover with parent supervision, places where medications are stored and identify any chemical substances that are taken to change how one's body or mind works. Child discusses with parent differences between medicine and...
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What's The Matter?
Fourth graders accurately describe various states of matter, Through experimentation, they change a variable to create a new state of matter. Students record their observations about the way matter is changed and the changes that occur...
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Reaction rates and Equilibrium
Learners listen to a lecture on the collision theory. They discuss the reactant and product changes during a chemical reaction. Students are taught the factors affecting reaction rates. They complete a lab on entropy, heat and free...
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Matter
In this matter worksheet, students are given 10 sentences with italicized terms that are wrong. Students correct the terms to appropriately fit the sentences. Topics are related to matter such as physical and chemical properties, solids,...
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Le Chatelier's Principle
In this chemical reaction activity, students apply Le Chatelier's Principle to explain how the given changes in reaction conditions will affect the position of equilibrium. This activity has 6 problems to solve.
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Calorimetry Worksheet
In this calorimetry worksheet, learners determine the change in enthalpy, sketch the heating curve, and determine the specific heat and heat of fusion for a given compound. This worksheet has 4 problems to solve.
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