Curated OER
Electrolytes and Colloids Worksheet
In 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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Photosynthesis and Cellular Respiration
For 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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Counting Atoms
In this atoms learning exercise, students count the atoms for 15 different formulas and describe the type of atoms and the number of atoms in each compound given.
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Carboxylic Acid and its Derivatives
In this carboxylic acid worksheet, students are given five problems to complete. Included are to name 10 given compounds, draw four compounds given their names, and complete 6 chemical reactions.
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Evaporation and Condensation
Young scholars explore how temperature affects the processes of evaporation and condensation.
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Ten Multiple-Choice Rate, Ratio, and Proportion Problems
For 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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How do plant & animal cells make and use energy?
Learners show the relationship between the need for plants to undergo photosynthesis in order to generate oxygen. They see the flaws associated with this thinking because of the lack of CO2 and H2O and lack of sufficient gravity in order...
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Compounds and Molecules
In this compounds worksheet, students compare separating elements of a compound and substances in a mixture. Students review melting and boiling point. This worksheet has 1 fill in the blank and 5 short answer questions.
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Einstein's BIg Idea
Students discuss what the m in E=mc2 represent. They relate that mass in a chemical reaction is always conserved. Students convey that atoms rearrange themselves in chemical reactions to form different molecules and compounds.
Nuffield Foundation
Enzyme-Catalysed Synthesis
Enzymes: not just for breaking chemicals apart. Young biologists perform an experiment on potatoes. They first remove starch from potato extract. They then add the resulting liquid to samples of glucose-1-phosphate, glucose, maltose, and...
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Extracting Oxygen from Moon Rocks
In this extracting oxygen from moon rocks instructional activity, students read about the need for oxygen for lunar colonists. Students solve 2 problems about the lunar mineral ilmenite which contains oxygen and other elements. They find...
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Science Lessons for Grade 10
Tenth graders identify the parts and functions of the cell. In this series of science lessons, 10th graders investigate crystal formation in covalent compounds. They investigate the factors affecting reaction rates.
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Benefits of Biotechnology
Various aspects about the impact of biotechnology in our everyday lives, and many examples of its application are given in these slides. Designed with multiple fonts, the style should be appealing to youth.
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Chemical Compounds
For this chemical compounds worksheet, students draw the Newman projections and the energy diagram for given molecules. Students draw the structure for different compounds. This worksheet has 4 drawing questions and 1 short answer question.
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Stereochemistry
Here is a comprehensive stereochemistry exam for advanced chemistry kids. In the 101 problems, there are short answer, multiple choice, and drawing questions. Topics include chiral and achiral molecules, enantiomers and diastereomers,...
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Drawing Lewis Structures
In this drawing Lewis structures worksheet, students read about the 5 steps taken to draw Lewis structures for atoms and molecules. These include identifying the valence electrons, placing pairs of electrons between atoms to be bonded,...
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Chemistry of Carbon - Building Blocks of Life
A great review of the structure and function of carbon-based molecules important to life, especially with relevance to humans. The chemistry behind the combination of polymers and the breakdown of bonds is covered. Valuable content...
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Worksheet 2-2 Stoichiometric Tools
In this stoichiometry worksheet, students solve a variety of problems including finding empirical and molecular formulas, determining molarities of solutions, determining molecular weights of compounds and calculating the percent mass of...
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The Mathematics of Chemical Formulas
Wow! This is one of the most exhaustive presentations on finding chemical formulas that you will come across! Beginning with the basics, and leaving junior chemists with procedures and concrete examples, this PowerPoint certainly...
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Polarity Homework
In this polarity worksheet, students are given 5 compounds and they draw the Lewis structure for each, they identify the bond angels, they write the molecular shape and they determine the polarity of the molecules. Honors students...
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Empirical Formulas
Students investigate empirical formulas for molecules. In this empirical formulas lesson plan, students use paper ions to form formulas and they show these are empirical formulas. They use ions of carbon and hydrogen showing electron...
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Everest The Death Zone
High schoolers watch a video about climbers on Mount Everest. In groups, they complete experiments in which they determine the concentration of oxygen in the air. They make predictions before beginning the experiment and complete a...
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Exam Review: Chemistry Calculations
In this chemistry calculations review worksheet, students solve 33 review problems about titrations, precipitates, pressure and volume of gases, combustion reactions, heat of combustion, molar concentrations and molecular formulas.
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What do Chemists See When they Look at Chemicals?
In this naming chemicals worksheet, students indicate the prefixes for naming compounds. They fill in a chart with the chemical names and formulas for alkanes. They draw the structural and molecular formula for propane and they draw and...