Beyond Benign
Stoichiometry Challenge
Have you been searching for environmentally friendly chemistry experiments to use in your high school laboratory? This stoichiometry experiment replaces a conventional aluminum to alum lab by using sodium carbonate and calcium chloride...
American Chemical Society
The Fate of Calcium Carbonate
Soften up an egg. Learners use vinegar to test for calcium carbonate in an egg shell and an antacid tablet and compare the reaction with vinegar to the reaction with water. In a second experiment, class members break down an egg shell...
Howard Hughes Medical Institute
Ocean Acidification
Human impacts on the environment can sometimes be difficult to measure, especially under water! An activity centered on ocean acidification gives science scholars the opportunity to examine the effects of carbon dioxide on marine life....
Royal Society of Chemistry
Compounds Ending in 'ate'
Tackle polyatomic ions with Sudoku-like games! Nomenclature novices practice identifying the names and constituents of carbonate compounds with a series of puzzles. Scholars can use the resource online or as a worksheet, thanks to the...
NOAA
Ocean Acidification
If tap water is more acidic than ocean water, why are we so concerned about ocean acidification? The third installment of a 23-part NOAA Enrichment in Marine sciences and Oceanography (NEMO) program focuses on carbon dioxide levels in...
Curated OER
Chalk Chromatography
Your chemistry class is sure to love this experiment on column chromatography, as demonstrated with chalk sticks and felt tip markers. Pupils use sidewalk chalk (another inexpensive form of chalk stick) to demonstrate adsorption and the...
Curated OER
Marine Habitats of Galveston Island
Four lessons introduce elementary ecologists to salt marsh and sandy beach habitats. In the first instructional activity, they place shells and other materials in vinegar to determine if they contain calcium carbonate. In the second...
Curated OER
Thermal Decomposition of Calcium Carbonate
In this thermal decomposition of calcium carbonate worksheet, high schoolers perform three experiments on calcium carbonate, make observations and write the equations for each reaction. Students explain in detail what happened at each...
Curated OER
Stoichiometry Worksheet I
In this chemistry worksheet, students explain how many moles of oxygen gas are needed to react with a certain number of moles of ammonia. They also identify how many grams of oxygen are needed to react with a certain number of grams of...
Curated OER
Chemical or Physical?
Fourth graders make observations of the reactions that happens between calcium carbonate and various liquids. During the experiment the students determine if there is a chemical change, a physical reaction, or no reaction when they mix...
Curated OER
Limestone
In this limestone worksheet, students name three sources of calcium carbonate, write the chemical formula, and determine the three elements found in calcium carbonate. This worksheet has 7 short answer and 3 problems to solve.