The Dihydrogen Monoxide Quiz

Dihydrogen monoxide, also known as water to the so-called "plebeian" folk, is an elusive substance that all living organisms require. Can you, a living organism who needs dihydrogen monoxide, answer these questions about the very substance you need?

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Last updated: May 21, 2026

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First submitted	June 10, 2024
Times taken	44
Average score	71.4%
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Hint

Answer

How many hydrogen atoms does water have?

How many oxygen atoms does water have?

There is a common factor between these two elements. What is it?

They're both nonmetals

There is a name for when two of these types of elements bond. It is called:

Covalent bonding

The average human body is approximately __% water.

60 (although usually within 45-75%)

Names for water in different states of matter

Liquid

Water

Solid

Ice

Gas

Vapor

The Earth is approximately __% water.

Approximately __% of that water is held by the oceans.

96.5

Monoxide is also present in many substances. One such element can form a toxic monoxide substance. This element is?

Carbon

Water comes in two forms: freshwater and saltwater. Freshwater can be drinkable. Drinkable water is also known as?

Potable water

A piece of land can be surrounded by water on all sides. This piece of land is called?

An island

When water erodes a ledge, it can eventually form a?

Waterfall

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1 Comments

Level 39

May 21, 2026

please accept vapour