The answer depends entirely on the type of chemical reaction.
If it's a chemical reaction that "splits" the molecules of the reactants into their constituent parts than no, the resulting number of atoms in the product would be equivalent to the sum of it's parts. Think dropping a magnesium strip in water, it splits the water into two hydrogen atoms and one oxygen, the magnesium strip burns off into a gaseous form.
However the nuclear reaction actually reduces the complexity of the molecules and their base parts (like chemical fission) into simpler forms (like actually changing one oxygen atom into 8 hydrogen atoms) then yes, the product would indeed have more atoms (though simpler) than the sum of it's parts.
False. The combined molar masses of the reactants is equal to the combined molar masses of the products.
Yes.
The reactants change & turn into products.
Input: reactants --> [ They react ] --> Output: products = what you get out of it
If a chemical change has occurred, the chemical composition has changed and new products will have formed, different from the reactants. If a physical change has occurred, the chemical composition does not change and no new products will have formed.
A product of a chemical reaction is the substance that is formed.
When a chemical reaction takes place, matter is conserved. The number and types of atoms in the reactants do not change in the products.
The reactants change & turn into products.
Input: reactants --> [ They react ] --> Output: products = what you get out of it
A chemical change always changes the chemical composition of the reactants to produce products with new and unique properties, different from the reactants.
From the reactants new products are formed.
The reactants are transformed in products.
Transformation of reactants in new compounds (products) is a chemical reaction.
A chemical reaction is the transformation of reactants in products.
The reactants change. The chemical bonds between the atoms in the reactants break, and then new bonds are formed, which results in the formation of new products.
in order for reactants to be changed into products, there needs to be a chemical change.
When you are balancing known reactants and known products which is always the case when you are asked to "balance" a chemical equation you must not change the subscripts as that changes the reactants or the products to a different chemical compound.
During a chemical change (chemical reaction) the resulting products have, of course, other properties - compared to the reactants.
During a chemica change the composition of reactants is modified, new products appear.