Not sure if I will get my answers here but thought of sharing some questions for which I didn't get any good answers till now..you can try to answer these or pose some unanswered questions you may have for others to answer..Somehow, I missed asking these questions to my science teachers in school
Hope this is not turned into a timepass thread so please avoid jokes
1) What is the composition of Fire - never read any chemical formula of fire or what it is made up of..how does it get created on clashing 2 rocks?
There is no formula of Fire, it is a type of energy. can u think of formula of sound, heat etc.
How come you feel heat while rubbing UR hands, u change one type of energy into other form of energy. when u clash two stones or any other hard surfaces, when the amount of Friction energy reches to its threashold, we see a small fire, that's it.
2) Water is made up of Hydrogen and oxygen- so can we create water in laboratory by mixing hydrogen and oxygen?
Yes Water gets created in Lab. usually byproduct of many reactions specially in reactions where energy is released.
3) Why do we need oxygen to breathe & live and not any other gas viz. hydrogen which is far more abundant.
How is oxygen different from hydrogen apart from some different atomic structure?
In order for humans to survive, our bodies have figured out various ways to extract energy from out surroundings.
One of the ways is with food, which provides out cells with raw materials to make, repair and replace out cells as needed.
A different kind of energy we need is that which allows us to make use of these raw materials. The body has figured out a way to extract this from oxygen. When you inhale, the oxygen in the air is absorbed into your bloodstream through tiny sacs in your lungs, called alveoli.
As soon as the oxygen enters your blood, a passing protein molecule called hemoglobin picks it up. Each molecule of hemoglobin can transport four molecules of oxygen to almost anywhere in the body.
The hemoglobin transport the oxygen to your cells where another protein, called cytochrome C oxidase makes two molecules of water out of every molecules of oxygen delivered to it.
If you think about it, water is plentiful on earth. This tells us that if you have the individuals ingredients for water around each other, chances are water will be made. When this happens, there is a little bit of energy released. This protein cytochrome C oxidase, mixes the ingredients for water and harvests the released energy. The cells then use the energy to perform the everyday functions that your body needs.
Every Substance’s Characteristics depends upon substances Atomic structure, depending upon which it reacts with other substances, If u don’t consider atomic structure then uranium and oxygen in also equal as other substances are. I can’t even understand significance of this question.
Will add some more later..