Which statement is true regarding a chemical reaction?(1 point)
none of the above I guess.
Which statement is true regarding a chemical reaction?
Even if the total number of atoms does not change, mass may not be conserved in the reaction.
A: Even if the total number of atoms does not change, mass may not be conserved in the reaction.
B: The total number of atoms does not change, so mass is conserved in the reaction.
C: The total number of atoms changes, so mass is conserved in the reaction.
D: Even if the total number of atoms changes, mass may not be conserved in the reaction.
My Answer is: B
A chemical reaction is a process in which one or more substances are transformed into different substances.
To determine which statement is true regarding a chemical reaction, you can refer to the scientific principles and laws governing chemical reactions. Here are a few potential statements along with an explanation of which one is true:
1. "A chemical reaction involves the creation or destruction of atoms." This statement is true, according to the Law of Conservation of Mass, which states that mass is neither created nor destroyed in a chemical reaction. Instead, the atoms rearrange to form new substances.
2. "A chemical reaction always produces a gas." This statement is not universally true. While some chemical reactions do produce gases, not all reactions lead to gas formation. Some reactions produce liquids, solids, or even involve changes in energy without any noticeable change in physical states.
3. "A chemical reaction always proceeds in the same direction." This statement is not true. In reversible reactions, a chemical reaction can proceed in both the forward and reverse directions until equilibrium is reached. This implies that reactants can convert to products, but products can also convert back to reactants under specific conditions.
In conclusion, statement 1 - "A chemical reaction involves the creation or destruction of atoms" - is true regarding a chemical reaction based on the Law of Conservation of Mass.