La magia del agua

Water is essential for life, making up a significant portion of the human body. It is unique in that it naturally exists in three states: solid, liquid, and gas. Water is a good solvent, capable of dissolving many substances to form solutions. When cooled, it becomes less dense as ice, and when heated, it turns into steam. Water's properties and its abundance on Earth make it vital for various functions, including energy creation, travel, and bodily functions.

What percentage of the human body is made up of water?

• About 1/3

• About 3/4

• About 1/4

• About 2/3

Which of the following is a unique property of water?

• It cannot change states.

• It is always a gas.

• It can dissolve many substances.

• It is always a solid.

What happens to water molecules when it freezes?

• They move closer together.

• They move further apart.

• They disappear.

• They stay the same distance apart.

At what temperature does water turn into steam?

• 150°C

• 100°C

• 50°C

• 0°C

Why is water considered essential for life on Earth?

• It is the least common substance on Earth.

• It is the most common liquid on Earth and vital for life processes.

• It is the most common gas on Earth.

• It is the most common solid on Earth.