Exploring the Building Blocks of Matter: How Small Are Atoms?

Atoms are incredibly small, invisible to the naked eye and even to microscopes. To illustrate their size, a piece of paper's thickness is made up of thousands of atoms. A small coin contains billions of atoms. Atoms can join to form molecules, such as water, which consists of two hydrogen atoms and one oxygen atom. A single drop of water contains trillions of molecules, highlighting the vast number of molecules in larger bodies of water like lakes.

What is the significance of the thickness of a piece of paper in relation to atoms?

How many atoms are needed to make a piece of paper as thick as mentioned in the text?

What does the small coin mentioned in the text contain, and how does it relate to the concept of atoms?

Explain how atoms combine to form molecules, using water as an example.

What is the estimated number of molecules in a single drop of water?