Electricity is "created" when certain chemicals react together. We use chemically- made electricity to power many machines from flashlights to a watch or sometimes a car. Yes, there are cars that run on electricity! The devices that store electricity are called batteries. Electricity can also be used to produce chemical changes.
Water is a simple chemical made from two gases -- hydrogen and oxygen. Every molecule of water has two atoms of hydrogen for every atom of oxygen. H2O is the chemical formula for a molecule of water.
If an electrical current is passed through water between electrodes (the positive and minus poles of a battery), the water is split into its two parts: oxygen and hydrogen. This process is called electrolysis and is used in industry in many ways, such as making metals like aluminum. If one of the electrodes is a metal, it will become covered or plated with any metal in the solution. This is how objects are silverplated.
You can use electricity to split hydrogen gas out of the water similar to the process called electrolysis.
Try This!
Sharpen each pencil at both ends.
Cut the cardboard to fit over glass.
Push the two pencils into the cardboard, about an inch apart.
Dissolve about a teaspoon of salt into the warm water and let sit for a while. The salt helps conduct the electricity better in the water.
Using one piece of the electrical wire, connect one end on the positive side of the battery and the other to the black graphite (the "lead" of the pencil) at the top of the sharpened pencil. Do the same for the negative side connecting it to the second pencil top.
Place the other two ends of the pencil into the salted water.
As the electricity from the battery passes through and between the electrodes (the pencils), the water splits into hydrogen and chlorine gas, which collect as very tiny bubbles around each pencil tip.
Hydrogen collects around the cathode and the chlorine gas collects around the anode.
How can you get chlorine from H2O? Good question! Sometimes in experiments, a secondary reaction takes place. This is what happens in this experiment.
Oxygen is not given off in this experiment. That's because the oxygen atoms from the water combine in the liquid with the salt to form hydroxyl ions. Salt's chemical formula is NaCl - sodium chloride. The chlorine gas is from the chloride in the salt. The oxygen in the hydroxyl ions stay in the solution. So, what is released in this reaction is not oxygen but is chlorine gas that collects around the pencil tip. Around the other pencil is hydrogen gas.
In real electrolysis systems, a different solution is used, and higher levels of electricity help to split the water molecules into hydrogen and oxygen without this secondary reaction.
Yes. :D
blobs take
atomic number 28 Nickel is present in most meteorites.Nickel facts: Nickel (Ni) has an atomic number 28. Nickel as an element was discovered by Alex Fredrik Cronstedt in 1751. Atomic Weight is 58.71. Melting Point is 1453 ºC. Boiling Point is 2730 ºC.
This is where you do your research and actually learn some facts about Mercury. Make a list of 25-50 facts about Mercury and pick one fact to be your title, like "The Hottest Planet."
You think probable to a chemical equation.
IDK by: alyssa
i need to know 100 facts about my science fair project . my project is about rusty nails . my project is that i had to see if the rust would come out my three nails i had . i need 100 facts please help me get us . !!!
The science which records facts about the Earth's surface is called geology.
When doing a science project you will first need to come up with a hypothsis and theorys to your project you will need the process data and come up with facts about you project you will need to draw conclusions and then make some type of interesting fact
not a single place. i have looked everywhere for my science project and i cant find it anywhere! ughh
You need to research because you need to make sure that your facts are correct.
i need to know this for a science project that im doing, so if you could answer to this person, that would be great!
i need to know this for a science project that im doing, so if you could answer to this person, that would be great!
Science is a branch of knowledge or study dealing with a body of facts or truths, systematically arranged and showing the operation of general laws.Science is the law , science is the fact that science is a fact about the law , the law of science is about facts.
Because Science is based on facts. It can be called the "quest for the truth". And no matter where you go facts will remain the same. The laws and principles of Science do not change no matter where you go - therefore the "universal language". and because they are cute
the reproducible facts concerned with matter is called science. painting,fashion,dancing etc are arts.
because science is ultimately not just facts. science is about finding explanation for facts.