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, students perform three experiments on calcium carbonate, make observations and write the equations for each reaction. Students explain in detail what happened at each step and...
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.