8 Questions
What is the atomic number of carbon?
6
What makes an element unique?
The number of protons in its nucleus
How many naturally occurring elements are there on earth?
91
Which element has an atomic number of 8?
Oxygen
What is the main criterion used to identify each element?
The number of protons in its nucleus
Which two elements are the simplest chemically unique components of water?
Hydrogen and oxygen
How many naturally occurring elements play normal physiological roles in humans?
24
Which two-letter symbol represents iron on the periodic table?
Fe
Test your knowledge on the fundamental building blocks of matter and their unique chemical properties. Explore the concept of chemical elements and how they combine to form compounds with distinctive characteristics.
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