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Matter cannot be created or destroyed, so there will be conservation of mass. If you look at a chemical equation, such as 2H2 + O2 = 2H2O, you can see that all the original material is there, just in a different arrangement. You start with 2 moles H2, which then get moved into H2O (typ. via combustion), and the same idea applies to the O2.
However, a very small amount of mass may be lost due to the energy change between products and reactants. This is a very small amount though, typically neglible.
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Which scientific law predicts that the mass of the reactants before a chemical reaction will equal the mass of the products after the reaction has taken place?
Law of Conservation of Mass (aka Law of Conservation of Matter)
How does law of the conservation of mass apply to chemical reactions?
The Law of Conservation of Mass applies to chemical changes. When considering a chemical change this would mean that the total mass of all of the reactants in the chemical reaction is equal to the total mass of products in the chemical reaction.
What states that mass is neither created nor destroyed in chemical reaction?
The law of Conservation of mass states that 'mass is neither created nor destroyed in a chemical reaction'.
A chemical equation must be balanced to satisfy the law of what?
A balanced chemical reaction obeys the law of conservation of mass, because the same number of atoms of each element must appear on both sides of the equation for the reaction, and in any actual reaction, the same exact atoms will be found on both sides of the equation.
During a chemical reaction the total amount of mass present?
The sum of the masses of the reactants and the masses of the resulting substances, at a specified moment.
What does the law of conservation mass states that during a chemical reaction total mass is what?
D. always equal to the total mass of the products.
What does the law of conservation of mass state that cannot be created or destroyed during a chemical reaction?
The law of conservation of mass (or matter) states that mass (or matter) cannot be created or destroyed during a chemical reaction. *Matter is anything that has mass and takes up space, so a lot of scientists call this the law of conservation of matter.
Which is supported by the law of conservation of mass?
During a chemical reaction, the total mass of the system cannot change.
What does the law of conservation of mass tell about the mass of a reactants and products in a reaction before a chemical reaction and the ass of the products of the mass of products after a chemical?
The law of conservation of mass tells us that the mass of the products will equal the mass of the reactants in a chemical reaction.
What law states that the mass can not be lost or gained in a chemical reaction?
The law of conservation of mass states that in a chemical reaction the mass of the reactants must equal the mass of the product.
What is the principal stating that matter is not created or destroyed during a chemical reaction?
The Law of Conservation of Matter dictates that the mass of the reactants is equal to the mass of the products, i.e., mass will not be created, nor destroyed during the chemical reaction.
How could a chemist find out how much mass is given off as during a chemical reaction?
By using the law of conservation of mass
Which scientific law predicts that the mass of the reactants before a chemical reaction will equal the mass of the products after the reaction has taken place?
Law of Conservation of Mass (aka Law of Conservation of Matter)
What is a principle that states that matters not created or destroyed during a chemical reaction?
It's called the law of conservation of mass.
A chemical equation must be balanced in order to show that mass is conserved during a reaction?
Yes. This is due to the law of conservation of mass/matter.
In a balanced chemical reaction the total mass of the products always equals the total what?
In a balanced chemical reaction the total mass of the products always equals the total mass of reactants; this is the law of mass conservation.
How does law of the conservation of mass apply to chemical reactions?
The Law of Conservation of Mass applies to chemical changes. When considering a chemical change this would mean that the total mass of all of the reactants in the chemical reaction is equal to the total mass of products in the chemical reaction.
