When was the last time your class saw a catalyst in action? Chemistry scholars observe an activated complex during an engaging experiment. Through both color change and evolution of a gas, individuals gain insight into the...

Diagrams with annotations are shown on each of these eighteen slides, which summarize the processes of respiration. The focus is on the 3-step oxidation process and the Krebs cycle.  Students should be able to follow these slides...

Do some experimentation with reduction-oxidation! Stoichiometry superstars use a single-replacement reaction to study limiting reactant, theoretical yield, and the reactivity of metals through a lab activity. The teacher's guide includes...

In this chemical reactions learning exercise, students review the oxidation number rules and then assign oxidation numbers to atoms in given compounds. Students identify the reducing agent and the oxidizing agent in reactions. Students...

In this oxidation reduction worksheet, students read the notes provided about the different types of chemical reactions. Students identify the reactants and products and answer fill in the blank and short answer questions.

Explore how electricity splits water molecules into hydrogen and oxygen. Learners begin by calculating the voltage necessary to separate the water. They then perform the experiment and measure the ratio of hydrogen and oxygen bubbles.

In this reaction instructional activity, students assign the oxidation numbers to all the atoms in the given compounds and ions. Students determine whether an element is oxidized or reduced in the given reactions. This instructional...

In this chemistry practice test worksheet, high schoolers review their knowledge of oxidation numbers, chemical reactions, and solubility as they answer 15 multiple choice questions.

Young scholars design a battery, identify and label the anode, cathode, electron flow, ion flow, oxidation & reduction reactions, chemicals used including the location of each;and distinguish between anode materials with regard to...

Encourage your classes to be laundry helpers! Learners explore the chemistry of stain removal with a lab investigation. By identifying the components of the stain, they identify the most effective solute for its removal.

Why do leaves change color in autumn? A presentation and worksheet walk through many details of photosynthesis. They explain where photosynthesis occurs, why plants are green, the changing colors in autumn, energy usage, and CAM plants.

Sometimes scientists learn more from unexpected findings than from routine analysis! Junior oceanographers dive deep to explore hydrothermal vent communities in the fourth lesson in a series of five. Scholars examine data and look for...

Students produce copper metal by electrolysis. In this REDOX lesson plan, students use a copper (II) chloride solution and a 9 volt battery to produce copper metal through an electrolysis reaction. Students make observations and take...

Study corrosion on bronze statues with a hands-on lesson. As pupils place a penny in water with salt, they observe the changes in the penny throughout a period of a week. They then analyze the pre-conservation and the...

In this half reactions activity, high schoolers read about redox reactions and learn how to write half reactions showing the oxidized part of the reaction and the reduced part of the reaction. Students are given 10 redox reactions and...

Students discover the relationship between tectonic plate boundaries and the communities of life that thrive at such boundaries. For this biology lesson, students find that methane from oxidized carbon in sediments provides nutrients for...

In this redox reactions worksheet, students balance six acidic solution reactions and six basic solution reactions. Oxidation and reduction numbers are given.

In this biological reactions activity, learners identify the type of biological reaction with the given example. Students also re-draw the biological reactions and circle the atoms that react together.

In this electrochemistry learning exercise, students balance 10 chemical equations and complete 28 additional questions about electrochemical cells.

While this resource does not provide problems for chemistry learners to solve, it outlines skills that they should have and concepts that they should grasp. Topics include thermodynamics, periodicity, redox equilibria, transition metals,...

Sixty multiple-choice chemistry questions make up this comprehensive exam used for the 2001 US National Chemistry Olympiad. Every topic that you would expect to approach in a general chemistry class is queried on. You could easily use...

This 60-question comprehensive exam was designed to determine who would go on to compete in the 2000 US National Chemistry Olympiad. Hopefuls answer multiple choice questions regarding all chemistry topics taught in the first year...

In this redox worksheet, students answer 8 questions. They use a diagram of a Galvanic cell to answer questions as well as write balanced equations and solve problems.

Students investigate oxidation-reduction reactions involving iron by conducting an experiment in which they expose iron filings to different atmospheric and ocean conditions. They relate the results to the oxidation banding patterns seen...