0
When burning a piece of wood what evidence is there to show that a chemical reaction had taken place?
Wiki User
∙ 6y ago
- the wood disappear
- the temperature is increasing
- gases as carbon dioxide and water vapour are released
Wiki User
∙ 11y ago
Wiki User
∙ 12y agoBecause it lights so there has to be a chemical reaction. That's a fact.
Wiki User
∙ 6y agoBurning is an oxidation reaction; wood as a reactant is transformed in water and carbon dioxide (products).
Wiki User
∙ 15y agoViolent flame and acrid smell.
its robloxweekly
smoke
Add your answer:
Earn +20 pts
How can you tell that a burning piece of wood is chemical change?
Because you can't put it back together. Imagine burning a piece of paper, there is no way that you can get that piece of paper back. Burning that piece of paper was a chemical change because you changed the chemical properties of the paper. Crumpling or cutting the paper doesn't change the molecular structure of the paper, so it is a physical change.
Is a twig being snapped in two a chemical change?
no, a chemical change is when something turns into something else. as an example burning paper is a chemical reaction because the paper turned into ashes and changed. but if you rip a piece of paper in half its still a piece of paper right. did that answer your question
Is there a physical or chemical change in the reaction of calcium carbonate and hydrochloric acid?
It would be a chemical change because a new substance is formed (Calcium Chloride). A physical change doesn't change the substances involved, it just changes it appearance, such as ice melting, water freezing or becoming a vapor, or if you cut up a piece of paper.Physical changes can be reversed, while chemical changes can not. A chemical change involves a reaction, a new substance, and heat given off or absorbed. Burning paper is a chemical change, as is frying an egg, or burning gasoline.
Is it a chemical or physical change if a piece of ice melts and reacts with sodium?
Melting is a physical process; reaction with sodium is a chemical process.
Name a chemical change?
Lighting A Match
Which action forms a different chemical substance?
Any chemical reaction produce a new substance.
Why a piece of wood is the example of the chemical reaction?
A piece of wood by itself is not an example of a chemical reaction. However, when the wood is burned, it chemically combines with oxygen in the air, producing mostly water and carbon dioxide. Because new chemical substances are created in this combustion reaction, the burning of wood is a good example of a chemical reaction.
How can you tell that a burning piece of wood is chemical change?
Because you can't put it back together. Imagine burning a piece of paper, there is no way that you can get that piece of paper back. Burning that piece of paper was a chemical change because you changed the chemical properties of the paper. Crumpling or cutting the paper doesn't change the molecular structure of the paper, so it is a physical change.
Is a piece of steel rusting a chemical reaction?
Yes. Rusting is a chemical reaction between iron and oxygen.
Is a twig being snapped in two a chemical change?
no, a chemical change is when something turns into something else. as an example burning paper is a chemical reaction because the paper turned into ashes and changed. but if you rip a piece of paper in half its still a piece of paper right. did that answer your question
When a piece of paper burns is it a physical or a chemical change?
Burning is a chemical change.
How do you usually release the chemical energy stored within a piece of wood?
By burning it.
Is burning a piece of paper chemical change or physical change?
Cheimical change
A different chemical substance is formed when a piece of cloth is cut cup breaks candle burns or a piece of chalk breaks?
The candle burning is a chemical process.
Is there a physical or chemical change in the reaction of calcium carbonate and hydrochloric acid?
It would be a chemical change because a new substance is formed (Calcium Chloride). A physical change doesn't change the substances involved, it just changes it appearance, such as ice melting, water freezing or becoming a vapor, or if you cut up a piece of paper.Physical changes can be reversed, while chemical changes can not. A chemical change involves a reaction, a new substance, and heat given off or absorbed. Burning paper is a chemical change, as is frying an egg, or burning gasoline.
How were a burning piece of paper and a burning marshmallow similar?
They are similar because you are producing a chemical change in both, making new substances.
Examples of chemical change?
Burning a paper. Any change where you can't go back to the original item is a chemical change. You can't go from ashes back to a paper. Crumpling a piece of paper is a physical change because it's still a piece of paper.
