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Why are there the same number of particles before and after the reaction?
Wiki User
∙ 13y ago
There are the same amount of particles at the end of a reaction as in the beginning of that reaction because of the law of conservation of mass. You simply cannot have particles disappearing to nowhere.
Wiki User
∙ 13y ago
Wiki User
∙ 13y agoThe law of conservation of matter states that matter cannot be created nor destroyed. This means that every bit of matter that is in the universe now will remain in the universe regardless of a chemical reaction. Whether some of the mass evaporates or forms into a precipitate matters solely on the reaction. The matter, however, will be preserved regardless.
Wiki User
∙ 11y agoThere are the same numbers of the same kinds of atoms in the beginning and the end of a chemical reaction because that is part of the definition of a chemical reaction. The word "particle" used in the question is a physical term rather than a chemical one, and there are not always the same number of particles in the beginning and at the end of a reaction. For example, solid iron filings, which constitute many "particles", can be dissolved in a water solution of hydrochloric acid and leave no "particles" behind at all: The product hydrogen is a gas and the product iron chloride remains dissolved in the water solution.
Wiki User
∙ 11y agoBecause of the law of conservation of matter/mass, which states that in a chemical reaction, matter is neither created nor destroyed. So the matter that goes into the reaction as the reactants, comes out as the products, but the atoms have been rearranged so that the products are different from the reactants.
Wiki User
∙ 14y agoYou still have the same mass because you haven't created or destroyed anything
Wiki User
∙ 13y agoatoms can not be created or destroyed so the during a chemical reaction the atoms merely bond separate heat up or cool down basically they just give off energy.
Wiki User
∙ 11y agobecause the 2 particles join together and make 1 particles so there for you then have magnesium and oxygen to forn magnesium oxide mgo
Wiki User
∙ 7y agoThis is the law of mass consevation.
The total mass mass is not changed during a chemical reaction.
Wiki User
∙ 15y agodon't know
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Why does Alex's equation better represent the reaction?
The number of oxygen atoms is the same before and after the reaction.
What is the same number that existed before the reaction exist after the reaction?
You think probable to the mass conservation.
How do the reactants of a chemical reaction differ from the products of the same reaction?
They contain different combinations of particles.
Why does increasing the pressure or concentration increase the rate of reaction?
Keep in mind that the reaction can only occur if the particles collide with enough power in the right position.The rate of reaction generally depends on four factors:ConcentrationNature of reactantsTemperatureCatalystsFor gases, pressure is also a factor. Say we have 1L of a gas and we compress it to 0.5L. Decreasing the volume will increase the pressure, and with a lower volume with the same number of particles increases the molarity (M). And as a convention, increasing the molarity/concentration increases the rate of the reaction because there is more of a chance for particles to collide in a small space rather than in a large space.Temperature also increases the rate of the reaction because it increases the kinetic energy of the particles, which will mean that more particles have the energy equal to or above the activation energy for the reaction to occur.
In a chemical reaction the total mass of the substances before the reaction is?
The mass of all substances before a chemical reaction is equal to the mass of the substance after the reaction. This is under the law of conservation of mass.
What happens to the number of particles at the beginning and end of the iron and sulfur reaction?
the number of particles stays the same because you have not made or destroyed anything
Why does Alex's equation better represent the reaction?
The number of oxygen atoms is the same before and after the reaction.
What is the same number that existed before the reaction exist after the reaction?
You think probable to the mass conservation.
How do the reactants of a chemical reaction differ from the products of the same reaction?
They contain different combinations of particles.
The atomic number is the same number as the number of these particles?
protons
The atomic number is the same as the numberof these particles?
The number of electrons
Is the number of gas particles the same as moles?
No
The atomic number is the same as the number of what two particles?
protons and electrons
Does the number of atoms entering the reaction stay the same as the number put out by the reaction?
Chemical reactions do not change the number of atoms so yes, the number of atoms stays the same.
Do the compounds remain the same as before the reaction when a chemical reaction occurs?
true
The atomic number is the same as the same as the number of these particles what are they?
The atomic number is the number of protons in the nucleus. The protons are positive particles, and so the number of them is matched by the number of electrons orbiting the nucleus. The organisation of the electrons determines how an element behaves when it reacts.
How does a catalyst usually emerge from a reaction?
Catalysts stay in the same form as it was before the reaction.
