Air and Oxygen are the same
Air and oxygen are two separate things. The
air in our atmosphere is composed of molecules of different gases. The most common gases are nitrogen (78%), oxygen (about
21%), and argon (almost 1%). Other molecules are present in the atmosphere as well, but in very small quantities. Oxygen is a component of air. Oxygen is produced by
plants during photosynthesis and is necessary for aerobic respiration in people and animals.
Children may use the terms air and oxygen interchangeably, yet they are two different entities. Air is a colorless, odorless, tasteless, gaseous mixture, mainly nitrogen (approximately 78 percent) and
oxygen (approximately 21 percent) with lesser amounts of argon, carbon dioxide, hydrogen, neon, helium, and other gases. Oxygen
is a component of air. Oxygen is produced by plants during photosynthesis and
is necessary for aerobic respiration in animals and human beings.
Have the children make a pie chart
similar to the one above breaking down the different gases that make up air.