0
Yes they can. Although conservation of mass holds for many processes (including many types of reactions), there are reactions that can reduce the amount of matter in a system (including closed systems). For example, the amount of matter is not conserved for a closed system that has undergone a nuclear reaction (fission, fusion).
Nuclear Fusion is a nuclear reaction by which two nuclei fuse to form a single (and more massive) nucleus. Consider two nuclei with masses m1 and m2 . The INITIAL total mass of the SYSTEM is m1 + m2 = M. After the nuclei fuse, you are left with a single nucleus with mass M" (the FINAL SYSTEM mass) that is more massive than both m1 and m2:
M" > m1 AND M" > m2
BUT it turns out that the INITIAL SYSTEM mass, M, is greater than the FINAL SYSTEM mass:
M > M" SO THAT ---> M - M" > 0
clearly the amount of matter in this closed system has changed, but what happened to the amount of matter that is missing?
m0 = M - M" -----> M" + m0 = M BUT where is m0?!!!!
Well, it turns out that the mass m0 was converted to energy (THINK E = m0 c^2). What type of energy you ask? Well, usually it's in the form of electromagnetic energy. That is, when two nuclei undergo the process of fusion, the system emits electromagnetic radiation. The energy is stored in the electric and magnetic fields associated with the electromagnetic waves emitted.
Wiki User
∙ 11y ago
Wiki User
∙ 11y agoYes they can. Although conservation of mass holds for many processes (including many types of reactions), there are reactions that can reduce the amount of matter in a system (including closed systems). For example, the amount of matter is not conserved for a closed system that has undergone a nuclear reaction (fission, fusion).
Nuclear Fusion is a nuclear reaction by which two nuclei fuse to form a single (and more massive) nucleus. Consider two nuclei with masses m1 and m2 . The INITIAL total mass of the SYSTEM is m1 + m2 = M. After the nuclei fuse, you are left with a single nucleus with mass M" (the FINAL SYSTEM mass) that is more massive than both m1 and m2:
M" > m1 AND M" > m2
BUT it turns out that the INITIAL SYSTEM mass, M, is greater than the FINAL SYSTEM mass:
M > M" SO THAT ---> M - M" > 0
clearly the amount of matter in this closed system has changed, but what happened to the amount of matter that is missing?
m0 = M - M" -----> M" + m0 = M BUT where is m0?!!!!
Well, it turns out that the mass m0 was converted to energy (THINK E = m0 c^2). What type of energy you ask? Well, usually it's in the form of electromagnetic energy. That is, when two nuclei undergo the process of fusion, the system emits electromagnetic radiation. The energy is stored in the electric and magnetic fields associated with the electromagnetic waves emitted.
Wiki User
∙ 14y agoYes it is. When a chemical reaction occurs, two or more types of atoms are bonding and rearranging as a result of being near or in each other.
Wiki User
∙ 14y agoNo, matter can neither be created or destroyed according to the law of conservation of matter. You end up with the same amount of matter as you started with.
Wiki User
∙ 6y agoThe structure of reactants is transformed during the chemical reaction.
Wiki User
∙ 6y agoIn a chemical reaction, the bonds between the atoms in the reactants are broken and reformed in new ways in the products.
Wiki User
∙ 12y agoIt has matter
Wiki User
∙ 12y agoyes,chemical reactions create new matter
Add your answer:
Earn +20 pts
What is a chemical reaction and how are reactants and products involved?
A chemical reaction is a change in which one kind of matter changes into a different kind of matter with different properties. Reactant is a substance used in a chemical reaction and a product is a substance made in a chemical reaction. Hope this is helpful! ;)
How does a chemical change affect the composition of matter?
chemical change = chemical reaction. ( the composition of matter always changes). In a chemical change the matter in one thing changes, for example you will know a chemical change has occurred when the color or odor has changes or when a new gas is given off.
Is heating sulfur a physical or chemical change?
Heating sulfur is a physical change. You're not changing the chemical composition of the sulfur, just the temperature. Now if you heat it to its boiling point and and it changes to a vapor it's a chemical change because you've changed its state of matter.(Actually changing the state of matter of an object is still a physical change, as it does not change the chemical composition of the element)
Is reaction to oxygen a physical or chemical?
This question makes no sense. Oxygen gas has both physical and chemical properties as do all substances.
What are substances that change when the become involved in chemical reaction?
Rust is formed by the chemical reaction of oxygen to iron. This process is called oxidation and occurs when ever iron (or some other materials) are exposed to oxygen. The result makes a new substance: rust.
When is a reaction considered chemical?
When the only change in mass is converted to light. The amount of matter after the reaction does not change.
A change in matter that produces a different type of matter?
chemical change or chemical reaction.
What is the process leading to a chemical change in matter?
a chemical reaction =)
Is it true that the amount of matter present appears to change during a chemical reaction?
The total mass remain unchanged.
Why the amount of reactant and product do not change in reversible reaction?
The amount of reactants and products do not change in reversible reactions because, in a chemical reaction, matter is neither created nor destroyed -- it is only rearranged. This is the law of conservation of matter.
A change in matter that produces one or more new substance is a?
A change in matter that produces one or more new substance is a chemical reaction. This is also known as a chemical change.
A change in matter that produces new substances is called?
Chemical change. References: Intro to Matter book.
What defines a chemical reaction?
is a change in matter that produces one or move new substances.
What is a chemical reaction and how are reaction and products involved?
A chemical reaction is a change in which one kind of matter changes into a different kind of matter with different properties. Reactant is a substance used in a chemical reaction and a product is a substance made in a chemical reaction. Hope this is helpful! ;)
What is a change in matter that produces new substance is called a?
Chemical reaction
Why does it appear there is less material after a chemical reaction?
The material still has the same amount. However, some of the matter leaves after the chemical reaction that changes the matter's molecular structure.
How often does a change in the composition of matter occur during a chemical reaction?
yes, in a chemical change where there is a chemical reaction, a new substance is formed. Therefore, a composition of matter always change
