Question

A)
Balancing chemical equations demonstrates that all atoms are conserved during reactions as theychange from reactants to products. Which fact does the conservation of atoms prove?
(1 point)
Matter is conserved.
Elements are conserved.
Compounds are conserved.
Molecules are conserved.
A)
Which purpose is served by an unbalanced chemical equation versus a balanced chemicalequation?
(1 point)
An unbalanced chemical equation demonstrates the mass of each product necessary to create a specificmass of product(s). A balanced chemical equation demonstrates how several compounds react with oneanother.
An unbalanced chemical equation demonstrates a general reaction that occurs between severalcompounds. A balanced chemical equation demonstrates the exact amount of each reactant necessary tocreate a specific amount of product(s).
An unbalanced chemical equation demonstrates how several compounds react with one another. Abalanced chemical equation demonstrates the mass of each product necessary to create a specific massof product(s).
An unbalanced chemical equation demonstrates the exact amount of each reactant necessary to create aspecific amount of product(s). A balanced chemical equation demonstrates a general reaction that occursbetween several compounds.

Answer 1

1) Elements are conserved.
- Conservation of atoms means the same number of atoms of each element appear on both sides of the equation, so the elements themselves are conserved.

2) An unbalanced chemical equation demonstrates a general reaction that occurs between several compounds. A balanced chemical equation demonstrates the exact amount of each reactant necessary to create a specific amount of product(s).
- Unbalanced equations show which species react and form but not stoichiometric amounts; balancing gives the exact mole ratios (and thus mass relationships).