
Your breath is warm and moist. It has different gases. You cannot see these gases. One gas is water vapor [the gas form of water].
When water vapor is cooled, it turns into a liquid.
Photo Credit: Salman Timur/Shutterstock
When a basketball is full of air, you can dribble. … read more
You hear the word infrastructure in the news. But what … read more
Morse code can be communicated with a flashlight. The flashes … read more
© 2025 McGraw-Hill Education. All Rights Reserved.