atomic number 20

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The term "atomic number 20" refers to an element called calcium. Let's break it down:

Basic Definition

• Atomic Number 20: This means that calcium has 20 protons in its nucleus. In simple terms, it’s a specific type of atom that makes up calcium.

Characteristics of Calcium

• Color: Calcium is a white metallic element.
• Burning: When calcium burns, it produces a bright light.
• Abundance: It is the fifth most common element found in the Earth's crust. This means you can find it quite often in nature.
• Importance: Calcium is important for many living things, including plants and animals. It helps in making bones strong and is involved in many biological processes.

Usage Instructions

• In Sentences: You can use "calcium" to talk about nutrition, chemistry, or biology. For example:
  • "Milk is rich in calcium, which is good for your bones."
  • "Calcium plays a vital role in muscle function."

Advanced Usage

• In scientific discussions, you might hear about calcium in relation to its compounds, like calcium carbonate (found in limestone) or calcium phosphate (important for bones).
• In health discussions, you may hear about calcium supplements or dietary recommendations.

Word Variants

• Calcium (noun): The element itself.
• Calcium-rich (adjective): Foods or substances that contain a lot of calcium, like cheese or almonds.
• Calcium deficiency (noun): A condition that occurs when there is not enough calcium in the body.

Different Meanings

While "atomic number 20" specifically refers to calcium in chemistry, the word "calcium" can have various contexts, such as nutrition, health, and material sciences.

Synonyms

There are no direct synonyms for "calcium" in the context of chemistry, but you may come across related terms like: - Ca: The chemical symbol for calcium. - Lime: Sometimes used in agriculture to mean calcium carbonate.

Idioms and Phrasal Verbs

There are no idioms or phrasal verbs directly related to "calcium," but you might hear phrases like "calcium build-up," which refers to deposits of calcium that can happen in the body or in other materials.

Summary

In summary, "atomic number 20" is a scientific way to refer to calcium, a vital element for life that is abundant in nature and necessary for healthy bones and many other functions in living organisms.

Academic

Noun

1. a white metallic element that burns with a brilliant light; the fifth most abundant element in the earth's crust; an important component of most plants and animals

Synonyms

• calcium
• Ca