Curated OER
A Solubility Curve for Potassium Nitrate
Step-by-step laboratory instructions are listed so that chemistry explorers can consider the solubility of potassium nitrate. They combine their results with those of other lab groups and then graph the data to display the solubility...
Curated OER
Preparation of Crystalline Derivatives of Aldehydes and Ketones
Chemistry explorers prepare a crystalline derivative and find its melting point. Once they discover the melting point, they are able to identify whether or not the substance is pure, and whether it is an aldehyde or ketone. This is an...
American Chemical Society
Carbon Dioxide Can Make a Solution Acidic
Can your breath change the acidity in a liquid? A lesson begins with a demonstration that proves it can. Then scholars perform an experiment to determine if other gases can change the pH of liquids. Finally, they research how this...
NOAA
Watch the Screen!
Can a sponge cure cancer? Life science pupils visit the drugstore under the sea in the fifth lesson of six. Working groups research the topic then get hands-on experience by testing the inhibiting effects of several plant extracts on E....
Cornell University
Predicting Chemical Reactions
Prove the Law of Conservation of Mass through a lab investigation. A well-designed lesson asks groups to combine materials and monitor indicators for chemical reactions. Measuring the mass of the reactants and products allows individuals...
Cornell University
Solar Cells: Juice From Juice
Unleash the power of ... blackberries! Science superstars create solar cells using the juice of berries or leaves of a citrus tree in an engaging lab. In addition to offering a plethora of resources, the teacher's guide gives background...
Curated OER
Investigating What Makes Fruit Go Brown
Is there anything that can be done to slow the browning of fruit once it has been cut? High schoolers determine the answer through five different investigations involving apples, potatoes, and chemical reactions. After each experiment,...
Beauty and Joy of Computing
Unsolvable and Undecidable Problems
Try as you might, some functions just cannot be computed. The lab introduces the class to the possibility of unsolvable problems. The fourth lesson in a series of seven begins with a logic problem, then progresses to looking at functions...
Chymist
Esters: An Introduction to Organic Chemistry Reactions
Scratch and sniff an introduction to organic chemical reactions. A creative lesson has individuals study the esters commonly used in scratch-and-sniff stickers and advertisements. Following the lab procedure, scholars create the organic...
Curated OER
Ionic vs. Covalent Compounds Lab
In this ionic and covalent compound worksheet, students investigate the properties of three unknown substances in order to determine if they are ionic or covalent compounds. They write conclusions about their results.
Curated OER
DNA Extraction Lab
Students extract DNA and test for its presence from unroasted (raw) wheat germ using a prescribed procedure. They modify the procedure to provide a less expensive, easier method. They also extract DNA from different available plant,...
Curated OER
Chemical and Physical Changes Lab
For this chemical and physical change worksheet, students conduct a variety of experiments with unknown solutions and make observations. Students determine if the properties of the solutions have changed and if there is a chemical or...
Curated OER
Gelatin and Enzyme Lab
Students observe the effectiveness of detergents on breaking down proteins. In this investigative instructional activity students participate in an activity that shows how proteins are broken down in gelatin and fill out a worksheet.
Santa Monica College
The Density of Liquids and Solids
There are underwater rivers that flow on the ocean floor thanks to a difference in density. Scholars learn about the density in both liquids and solids in the second lesson of an 11-part series. They then determine the density of water,...
Curated OER
Oxidation of Ethanol to Ethanal
Here is a laboratory exercise where chemistry masters carry out an oxidation reaction to change ethanol into ethanal. They compare the original alcohol to the resulting aldehyde by forming a precipitate. Definitely aimed at learners...
Nuffield Foundation
A Closer Look at Blood
Here is a lab that has teenage scientists examining samples of their own blood under a microscope. Learners carefully prepare slides, then make detailed observations and identifying different types of cells using a key.
Curated OER
Life in Extreme Environments - Who is on Top in the Food Chain?
Young scholars discuss the design of experiments to determine how much and how fast rotifers feed and design experiments with a lab partner and in small collaborative groups. They then collect data from experiments and present results of...
Texas State Energy Conservation Office
Nuts! Calculating Thermal Efficiency
Oh nuts! Do macadamias or almonds produce more thermal energy? Energy enthusiasts find out with this experiment. The objective is to demonstrate to your class how the chemical energy contained in foods can be converted into useable...
Curated OER
Emerging Viruses
Students study the characteristics of living things and explore the characteristics of viruses including their structure, function, and reproductive cycles. They also explore the impact of viruses on human health by discussing common...
Curated OER
Analysis of Bleach
Students analyze and compare laundry bleaches by testing their oxidizing powers. They conduct their lab experiment, compare/contrast their results with other students' work, and complete a worksheet.
Curated OER
Anodising Aluminum
Learners examine Barton's pendulums and watch the video Tacoma Narrows bridge. In this pendulum and momentum lesson students complete a lab activity, view a video and research a given topic.
Curated OER
Determining the Density of a Drop of Water-A Graphing Exercise
Students determine the density of 1 drop of water. In this determining density lesson plan, students determine the mass and volume of a drop of water in the lab using appropriate lab techniques and calculate the density of a drop of water.
Curated OER
Identifying Organic Compounds
In this organic compound lab activity, students complete 5 pre-lab questions before testing a variety of common foods to determine which organic compound is present. Once data collection is complete and recoded, they answer 9 analysis...
NOAA
Off Base
How does carbon dioxide affect the world's oceans? The final installment in a series of six lessons has pupils research ocean acidification, then conduct an experiment to witness the delicate balance that exists in our seas. Materials...