What is Calcium Carbonate?
Calcium carbonate is a chemical compound with the formula CaCO3. It is a common substance found in rocks as the minerals calcite and aragonite. It is the main component of shells of marine organisms, snails, coal balls, pearls, and eggshells. Calcium carbonate is the active ingredient in agricultural lime and is created when calcium ions in hard water react with carbonate ions to create limescale.
Properties of Calcium Carbonate
- Chemical Formula: CaCO3
- Molar Mass: 100.0869 g/mol
- Appearance: White solid
- Solubility: Insoluble in water
- Uses: Calcium carbonate is used in the construction industry, as a dietary supplement, in the production of plastics, as a filler in the paper industry, and in the purification of iron.
Study Guide
To understand Calcium Carbonate better, here are some study questions and activities:
- Explain the chemical formula of calcium carbonate and its molar mass.
- Investigate the different forms in which calcium carbonate is found in nature (e.g., calcite, aragonite).
- Research and list down the various industrial uses of calcium carbonate.
- Conduct an experiment to test the solubility of calcium carbonate in water and other solvents.
- Discuss the environmental impact of calcium carbonate and its role in carbon sequestration.
By studying these aspects of calcium carbonate, you will gain a deeper understanding of its properties and applications.
.◂Science Worksheets and Study Guides Third Grade. Relationships among living things
Study Guide
Relationships among living things 
Activity Lesson
Relationships Among Living Things Worksheet/Answer key
Relationships among living things Worksheet/Answer key
Relationships among living things Worksheet/Answer key
Relationships among living things Worksheet/Answer key
Relationships among living things Vocabulary/Answer key
Relationships among living things Vocabulary/Answer key
Relationships among living things
Activity LessonWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyVocabulary/Answer keyVocabulary/Answer keyThe resources above cover the following skills:
LIFE SCIENCE
From Molecules to Organisms: Structures and Processes
Create representations to explain the unique and diverse life cycles of organisms other than humans (e.g., flowering plants, frogs, butterflies), including commonalities such as birth, growth, reproduction, and death.
Unity and Diversity
Construct an argument from evidence to explain the likelihood of an organism’s ability to survive when compared to the resources in a certain habitat (e.g., freshwater organisms survive well, less well, or not at all in saltwater; desert organisms survive well, less well, or not at all in woodlands).
Create models that illustrate how organisms and their habitats make up a system in which the parts depend on each other.