A good scientist or somebody whose presenting this to a class would show you where these chemical lie on the periodic table of elements. Let's go ahead and take ammonia. Ammonia right here, and ammonia is made out of nitrogen and three parts hydrogen. So if you look on the periodic table you could see nitrogen and over here you can see hydrogen. So how it would be written, would be, capital N which is a short case for it and it would be three parts hydrogen which would be a small 3 at the bottom. Next thing that you want to look for is for instance, let's take, let's take sugar. Sugar has huge combination and as you can see, this is pretty much of a neutral base, okay. So let's go ahead and take sugar. Sugar is actually six parts carbon, it's twelve parts hydrogen and it's six parts oxygen. You can see the different combinations for it. Okay. Let's go ahead and let's take baking soda. Baking soda is obviously one part soda which would be, or sodium, which would be a capital N, lower case A and that would fall, if you look on the periodic table of elements here, that would certainly fall, "I can't find". "Look at", okay. This is a pick up. Okay, let's look at baking soda. Baking soda falls on the periodic table, here you have sodium, Na; then you have hydrogen, and it's one part hydrogen; then you have carbon and then you go ahead and have three parts of oxygen and that's what makes a baking soda. Next, if you look here, you have your citric acid. Now, this is obviously an acid and you could tell that it turn red in color in the cabbage juice should stand that. What you have is a make up of six parts carbon, eight parts hydrogen and seven parts oxygen. Kind of it's neat how you get the periodic table and you could see that anything that we have on the earth is this element or combination elements and this is very, very interesting.