Curated OER
Marine Habitats of Galveston Island
Four lessons introduce elementary ecologists to salt marsh and sandy beach habitats. In the first lesson, they place shells and other materials in vinegar to determine if they contain calcium carbonate. In the second lesson, they read a...
Creative Chemistry
Thermal Decomposition of Calcium Carbonate
For this thermal decomposition of calcium carbonate learning exercise, learners perform three experiments on calcium carbonate, make observations, and write the equations for each reaction. Students explain in detail what happened at...
Curated OER
Stoichiometry Worksheet I
In this chemistry instructional activity, 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...
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.