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.
The 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.
There 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.
Because 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.
You still have the same mass because you haven't created or destroyed anything
atoms 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.
because the 2 particles join together and make 1 particles so there for you then have magnesium and oxygen to forn magnesium oxide mgo
This is the law of mass consevation.
The total mass mass is not changed during a chemical reaction.
don't know
The number of oxygen atoms is the same before and after the reaction.
They contain different combinations of particles.
You think probable to the mass conservation.
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.
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.
the number of particles stays the same because you have not made or destroyed anything
The number of oxygen atoms is the same before and after the reaction.
You think probable to the mass conservation.
They contain different combinations of particles.
protons
The number of electrons
No
protons and electrons
Chemical reactions do not change the number of atoms so yes, the number of atoms stays the same.
true
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.
Catalysts stay in the same form as it was before the reaction.