Walk as fast as you can in a circle around a section of the pool that's about 3 feet deep (the more people, the better the effect). Do about 20 laps, then change direction for 10 laps. The resulting rush of water against your body will feel much like the jets in a whirlpool.
Elements and Compounds. All matter in the natural world is composed of one or more of the 92 fundamental substances called elements. An element is a pure substance that is distinguished from all other matter by the fact that it cannot be created or broken down by ordinary chemical means.
The cells of living things are made mainly of four elements: carbon, hydrogen, oxygen and nitrogen. They make up 96% of the atoms that are in living things, so they would be considered major chemicals.However, depending on how you define major, other elements that only make up a few percent of cells can top the list.he Big Four. Carbon, hydrogen, oxygen and nitrogen are known as the main âorganicâ elements because they form the building blocks that make life possible. Among the four, carbon is perhaps the most special, since it can form bonds with itself and makes molecules that have many different shapes.