List of chemical elements

High school (ages 12+)
Science & Technology

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Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/list-of-chemical-elements

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. Who discovered List of chemical elements?Ranges from natural abundance to laboratory synthesis
2. What is the total officially named elements?118
3. What is the defining characteristic?Atomic number (number of protons in the nucleus)
4. What are chemical elements and why are they important?Chemical elements are the basic building blocks of everything around us. Each element is defined by a specific number of protons in its nucleus, which gives it a unique identity. They make up all the matter we see and touch.
5. How many chemical elements do we know about?Scientists have officially recognized 118 different chemical elements. These include everything from the lightest hydrogen to the heaviest elements created in laboratories.

Chemical Element: A pure substance composed solely of atoms with an identical number of protons in their atomic nuclei.
Atomic Number (Z): The count of protons within an atom's nucleus, serving as the unique identifier for each element.
Periodic Law: The principle that the chemical and physical properties of elements recur periodically when arranged by atomic number.