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Chemical Elements and Unique Properties Quiz

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Chemical Elements and Unique Properties Quiz

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Questions and Answers

What is the atomic number of carbon?

6 (correct)

What makes an element unique?

The arrangement of protons and neutrons

The combination of protons and electrons

The number of protons in its nucleus (correct)

The number of electrons in its nucleus

How many naturally occurring elements are there on earth?

118

91 (correct)

Which element has an atomic number of 8?

Oxygen Signup and view all the answers

What is the main criterion used to identify each element?

The number of protons in its nucleus Signup and view all the answers

Which two elements are the simplest chemically unique components of water?

Hydrogen and oxygen Signup and view all the answers

How many naturally occurring elements play normal physiological roles in humans?

24 Signup and view all the answers

Which two-letter symbol represents iron on the periodic table?

Fe Signup and view all the answers