0
What else can I help you with?
When a glass rod is rubbed with a silk cloth which substance looses electron?
The glass rod loses electrons when rubbed with a silk cloth. This leaves the glass rod positively charged as it loses negative electrons to the silk cloth through friction.
What is the principle of the phlogistan theory?
The phlogiston theory was a scientific hypothesis that proposed that all combustible materials contain a substance called "phlogiston," which is released during combustion. According to the theory, when a substance burns, it loses phlogiston. This theory has been disproven by modern chemistry.
What conditions are necessary for combustion?
There are some conditions associated with the process of combustion. The substance to be burnt must be combustible (the substance must catch fire easily). Wood, paper, coal, coke, hydrogen, liquified petroleum gas, natural gas, petrol, kerosene, diesel, alcohol, ether etc. are some of the combustible substances. The presence of a supporter of combustion is another condition for combustion to take place. They are nothing but the substances which help combustion of a combustible substance. Oxygen and air are the supporter of combustion. Air contains 21% of oxygen (a supporter of combustion) by volume and 78% of nitrogen by volume which is neither combustible nor a supporter of combustion. That is why combustible substances burn at moderate rate in air but burn at a very fast rate in oxygen. Another condition for combustion to take place is that the combustible substance should be heated so that its temperature reaches its ignition temperature. No substance can burn below its ignition temperature. The substances having low ignition temperature are called inflammable substances. The vapors of these substances in air can catch fire with a minor spark and hence can cause serious accident. Alcohol, ether, carbon disulphide, benzene synthetic fibres are some of the substances having low ignition temperature. If the ignition temperature is below the room temperature the substance can catch fire even without an external source of heat energy.
What are the differences between combustible and non combustible dust?
Combustible Dusts have a KST value of Greater Than Zero, and can cause a Week to Very Strong Explosion... (Powdered Milk, Sugar, Coal, Wood, Plastic, Food/organic, Aluminum, Zirconium). Non-Combustible Dust, have a KST Value of Zero, and Don't cause an Explosion: Non-Combustible Dusts: Aggregates, such as stone, silica(sand), Silicates, Sulfates, Nitrates, Carbonates, Phosphates, Portland cement, Sand, Limestone.
When you rub a ruler with a cloth what happens to the cloth?
Rubbing a ruler with a cloth creates friction, which transfers some of the ruler's electrons to the cloth, giving the cloth a negative charge. This process is called triboelectrification.
Why you say that a paper or matchstick as a combustible substance?
Anything that can burn is a combustible substance.
IS salt combustible substance?
no salt is not a combustible substance but salt water is combustiblle
What is combustible substance?
Combustible substance : Substances that burn easily or catch fire easily are called combustible substances. Paper, clothes, wood, LPG are all combustible substances. Without these substances, a fire cannot be started.
Is iron nail a combustible substance?
i think it is not a combustible substance because it doesn't produce heat. ******************************************* No, examples of combustible substances are wood, paper, petrol, flour dust, etc. Iron will never burst into flames, though it will melt into a liquid if heated enough.
If Hydrogen is combustible substance and oxygen is also combustible substance but the product water is non combustible substance Why?
When hydrogen burns, it is combining with oxygen. Once it has combined to form water, the molecule does not want to readily accept more oxygen atoms. Fire is rapid oxidation, so if it is already oxidized, it is done.
Is iron a combustible substance?
i think it is not a combustible substance because it doesn't produce heat. ******************************************* No, examples of combustible substances are wood, paper, petrol, flour dust, etc. Iron will never burst into flames, though it will melt into a liquid if heated enough.
Advantages and disadvamtges of using lpg in car?
It is a combustible substance. It
Are all substance cumbustile?
No, not all substances are combustible. Combustibility is determined by a substance's chemical composition and properties. Some materials may be non-combustible or require extreme conditions to ignite and burn.
Is paper combustible or not?
Substances which undergoes burning is combustible substances. eg: paper ,cloth , wood substances which doesnt undergoes burning is non_combustible substances. eg: stone, bricks soil ,water. So, paper is combustible .
What Is ability to burn is called?
A substance which has ability to burn is called combustible.
What are combustible and non combustible substance explain with example?
Cobustible substances can catch on fire but non-combustible substances are inflammabe
Is a highly combustible substance also a highly reactive substance?
Not necessarily. A substance that is highly combustible has a tendency to ignite easily and burn rapidly, but it may not necessarily be highly reactive. Reactivity refers to how readily a substance undergoes a chemical reaction with other substances, which may or may not lead to combustion.
