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What would be an example of a chemical change that took a long time to occur?
The rusting of iron is an example of a chemical change that can take a long time to occur, depending on the environment. It involves the reaction of iron with oxygen and water over a period of time to form iron oxide (rust).
What is an example of a chemical change that took a long time to occur?
The rusting of iron is an example of a chemical change that can take a long time to occur. When iron is exposed to oxygen and moisture over an extended period, a chemical reaction takes place that forms iron oxide (rust) on the surface of the metal. This process typically happens gradually over months or years.
How do you separate a mixture of gold nuggets from iron filings and sodium?
The separation of gold from iron filings and sodium metal (a dangerous substance which will react with water in the air) could be done in two steps. Take a magnet and put it inside a plastic bag. Carefully and fully move the bagged magnet over the mixture, gently stirring it to insure the magnet can "reach" all the iron filings. When you are done, lift the magnet clear of the mixture, and you should have all the iron filings stuck to the magnet, which is inside the bag. If you carefully "invert" the bag, you'll then have the bag around the filings, which will still be stuck to the magnet with a layer of plastic bag between the two. Then just close the bag and remove the magnet. Your iron filings have been separated and bagged up. Now turn your attention to the gold and sodium mixture. Put them in a big heavy plastic container. If you *carefully* add water, you will get a chemical reaction. It is *critical* to put water in a drop at a time. (Yes, a drop at a time.) The sodium will react with the water and create sodium hydroxide, which is powerful base. It will also create a lot of heat, so you have to take all day to drop in the water so it won't melt your bucket. There will be some strong fumes, too, so take precautions. The bucket, because it is plastic, won't react with the sodium hydroxide. After you spend all day dripping the water into the mixture to react with all the sodium, you'll have a solution of sodium hydroxide with the gold in it. Strain this mixture and the gold will remain in the sieve. You'll need to wear a ton of protection to perform this evolution. Rinse your gold well to remove the traces of the sodium hydroxide and you're in business.
How will you use a solenoid to magnetise a steel bar?
When you pass an electric current through a solenoid, a roughly uniform magnetic field is produced inside the coils. Exposing a ferromagnetic material such as steel to a magnetic field will magnetise it, so placing a steel bar inside the coils of a solenoid with sufficient current passing through it will magnetise the bar.
What is made when iron is burnt?
Burning of iron requires lot of energy.When iron is burnt, if there is not fuel to aid the fire then iron will not burn for long time. But let say in this case iron is being readily burned it will produce moderate amounts of smoke, carbon dioxide, water and some metal oxides.
Why aren't all iron materials permanent magnets?
When a magnet or iron piece is watched under a powerful microscope we will obseve that a magnet or iron is made up tiny tiny pieces which cannot be further divided realistically such small pieces are known as domains. In a magnet all domains are in the same direction due to which it attracts iron. While in a iron these domains are arranged randomly which nullify its magnetism. When a magnet is brousht near an iron matrial all the domains get attracted to the magnet due to which domains in iron get arranged in a particular direction due to wich at that time they act as magnets but as soon as the magnet gets farther the domains again arrange them selves randomly due to which tey do not remain permanent magnets
What happens when you touch a piece of iron to a permanent magnet?
When you touch a piece of iron to a permanent magnet, the iron can become magnetized temporarily because it can align its domains with the magnetic field. However, once the iron is removed from the magnet, it will lose its magnetism over time. The iron itself does not retain a permanent magnetism like the original magnet.
Give example of a temporary magnet?
when a magnet is hardly rubbed on a iron ,for some time it reacts as a magnet. An example of a temporary magnet is used in acar breakers yeard . A crane fitted with amagnet picks up a car and then the power to the magnet is cut and the car drops.
Is iron a permanent magnet?
No, iron is not a permanent magnet. It can be magnetized in the presence of a magnetic field but will lose its magnetism once the external magnetic field is removed. Permanent magnets, on the other hand, retain their magnetism without the need for an external magnetic field.
How can you tell which side of a magnet to place on your body for magnetic healing therapy?
Magnets do not actually have any effect on the human body. There is less iron in the entirety of your body than there is in a couple of iron screws, and the iron that IS in your body is not of the magnetic variety. If Magnetic Healing were real, then any time someone went in for an MRI scan all of the blood in your body would be ripped through your skin and splatter onto the machine.
What type of magnet keeps its magnitism for a long time?
A neodymium magnet is known for its strong magnetism that can last for a long time. These magnets are made of rare earth elements and are commonly used in various applications where a strong, long-lasting magnetic field is required.
Why soft iron is used for making a permanent magnet?
Soft iron is not used for making permanent magnets; instead, it is used as a temporary magnet due to its high magnetic permeability and ability to be easily magnetized/demagnetized. Permanent magnets are typically made from hard magnetic materials like neodymium or ferrite, which can retain their magnetism for a long time.
What distinguishes a permanent magnet from a temporary magnet?
Permanent magnets do not lose their magnetic ability. Temporary magnets, however, gain magnetic properties when they are touched or moved by a permanent magnet. The properties of a temporary magnet dissipates over time after the permanent magnet is removed.
How long does iron take to decompose?
iron does not decompose but after a long time and i mean a long time it just starts to flake away but does not decompose
Can the earth be a permanent magnet?
No, the Earth is not a permanent magnet. Earth's magnetic field is generated by the movement of molten iron and nickel in its outer core, creating a magnetic field that fluctuates in both strength and direction over time. It is not a fixed or permanent magnet like a bar magnet.
How can you make an iron nail into a magnet?
Use a D battery, connect the negative and positive to separate copper wire. On the other end of the wire, wrap it around an iron nail (make sure there is space between the wire) and there you go!!
Is the Bermuda Triangle supernatural?
Yes it is as some say it does have to do wih a huge magnet down there that attracts the planes and makes it crash i mean i would say it is supernatural and has Magnetic force at the same time
