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: 100.09 g/mol
Appearance: White solid
Odor: Odorless
Solubility in water: 0.013 g/100 mL (25 °C)

Uses of Calcium Carbonate:

Calcium carbonate has various industrial applications, including:

As a dietary supplement for calcium
In the manufacturing of cement and mortar
In the production of plastics, rubber, and paints
In the purification of iron from iron ore in a blast furnace
In the production of glass and paper

Study Guide:

What is the chemical formula of calcium carbonate?

The chemical formula of calcium carbonate is CaCO3.

Where is calcium carbonate commonly found?

Calcium carbonate is commonly found in rocks as the minerals calcite and aragonite. It is also the main component of shells of marine organisms, snails, coal balls, pearls, and eggshells.

What are the industrial uses of calcium carbonate?

Calcium carbonate is used in the manufacturing of cement and mortar, production of plastics, rubber, and paints, purification of iron from iron ore, and production of glass and paper. It is also used as a dietary supplement for calcium.

◂Science Worksheets and Study Guides Fourth Grade. Classifying organisms

Study Guide

Classifying organisms

Worksheet/Answer key

Classifying organisms

Worksheet/Answer key

Classifying organisms

Worksheet/Answer key

Classifying organisms

Vocabulary/Answer key

Classifying organisms

Vocabulary/Answer key

Classifying organisms

Vocabulary/Answer key

Classifying organisms

Vocabulary/Answer key

Classifying organisms

The resources above cover the following skills:

The Living Environment: Students understand that cells are the basic unit of life, that all life as we know it has evolved through genetic transfer and natural selection to create a great diversity of organisms, and that these organisms create interdependent webs through which matter and energy flow. Students understand similarities and differences between humans and other organisms and the interconnections of these interdependent webs.

Biodiversity: Students compare living things based on their behaviors, external features, and environmental needs.

Describe how living things can be sorted in many ways, depending on which features or behaviors are used to sort them, and apply this understanding to sort living things.