Curated OER
Parts-Per-Million Concentration Lab
Students develop a comprehension of parts per million as a concept. They work in teams to create successive dilutions of a solution to reach a parts-per-million concentration. Students list what they think the atmosphere is made of. They...
Curated OER
Diffusion through Membranes
Students identify diffusion and its processes through experimentation and calculations. They also use a CBL and conductivity probe to measure the conductivity of various solutions and study the effect of concentration gradients on the...
LABScI
Freezing Point Depression: Why Don’t Oceans Freeze?
Can you go ice fishing in the ocean? Learners examine the freezing point of different saltwater solutions. Each solution has a different concentration of salt. By comparing the freezing points graphically, they make conclusions about...
Curated OER
Visual Models of Solutions and Concentrations
Learners model solutions with beakers of colored glass or plastic spheres. In this solutions lesson, students use beakers of colored spheres to represent pure substances. They mix the spheres to demosntrate solutions. They discuss...
Curated OER
Solution Shapes
Eighth graders examine different solutions. In this solution material instructional activity students complete a lab activity and several worksheets.
Curated OER
What's the Difference Between Concentration and Solubility?
Students discuss the difference between concentration and solubility as well as examine the difference in a hands-on activity. Using water and table salt, they experiment with solubility. They create different concentrations using water...
Curated OER
stoichiometric (molarity, gases, mass)
In this chemistry worksheet, learners identify the volume that is required for complete precipitation. Then they identify what concentration of the base is in moles per liter. Students also name the formula weight of a hydroxide.
Towson University
Looking Into Lactase: Guided Inquiry
Milk does a body good ... unless, of course, someone is lactose intolerant. Pupils play the role of pharmaceutical scientists in a guided inquiry lab about lactase. Lab groups collaborate to learn more about lactose intolerance, how...
Towson University
The Crucial Concentration
Which sports drink provides the best pick-me-up after the big game or grueling workout? It may not be the one you'd think! Food science is the focus in a surprising lab activity. Pupils use colorimetry to determine the amount of protein,...
Beyond Benign
SLS Toxicology Test
Ingredients in your shampoo are toxic enough to kill plants. The 16th installment of the series of 24 tests the toxicity level of various concentrations of SLS, a chemical found in nearly all shampoo. Learners prepare percent solutions...
Curated OER
Bacterial Movement Through Water Part 2- Dilution/Powers of Ten
Pupils make dilutions using dulution trays. They keep track of their dilutions and the concentrations of solute, to parts per million (ppm) and parts per billion (ppb), in order to have an comprehension of the terms. Students make...
Curated OER
Calculating pH and pOH
For this acids and bases worksheet, young scholars calculate the concentration of OH- and the pH of solutions. This worksheet has 10 problems to solve.
Curated OER
How Can We Accurately Make Different Solutions of Different Concentrations?
Students work together to create different solutions made from different concentrations of liquids. They record and analyze their data. They answer discussion questions to complete the lesson.
Curated OER
Solubility of Ionic Substances
For this solubility worksheet, students identify substances as either ionic or molecular, define saturated solution and solubility, and calculate concentration of solutions. This worksheet has 7 short answer, 5 fill in the blank, and 27...
Curated OER
The "Clock Reaction" Kinetics Lab
Students investigate the effects of temperature and concentration on the rate of reactions. In this "clock reaction" kinetics lesson plan, students change the concentration of one reactant and keep the second constant. An indicator is...
Curated OER
Acid-Base Titration
Students determine the concentration of an acid using titration. In this acid-base titration lesson plan, students determine the concentration of an unknown hydrochloric acid solution using phenolphthalein as an indicator and a known...
Curated OER
Factors that Affect Reaction Rates
Collaborating chemistry pupils observe that temperatrue increases the movement of dye throughout water, stirring increases the dissolving rate of sugar cubes, and concentration of solutions increases the chemical reaction rates. These...
Curated OER
Colorimetric Determination of the Concentration of Blue Food Coloring in Sport Drinks
Seventh graders determine the amount of blue food coloring in sports drinks and plot the concentration and absorbance data. They summarize the data and determine why companies need to know the amount of chemicals in their products.
Curated OER
Conductivity of salt Solutions
Learners investigate the concentration level of solutions. In this math/science instructional activity, students identify three different ionic compounds. They predict the conductivity of each using their collected data.
Curated OER
Designing a Solar Concentrator
Students design and build a solar concentrator. In this physics lesson, students evaluate their design and convince everyone why theirs is the best. They create a presentation and share it with the class.
Curated OER
Life and Death in the Camps
Students state the difference between death camps and concentration camps used during the Holocaust. Using primary source documents, they summarize what life in the camp was like. They describe the final solution used by the Nazis.
Curated OER
Molecular Movement in Water Part 1- Diffusion
High schoolers obseve and compare molecular movement within water at various temperatures and of varying salinity. They discuss the movement of water on a larger scale which can affect the movement and concentrations of microbial...
Curated OER
The Need for Normality
Students investigate the need for measuring concentrations in normality in titrations. In this titrations and normality lesson, students perform titrations and use different indicators to show they change colors at different pH values....
Curated OER
Mixing in the Kitchen
Students identify the different types of mixtures. They identify examples of solutions, suspensions, colloidal dispersions, and emulsions through a game and basic experiments.