Which procedure could be used to demonstrate that matter is conserved during a chemical change or reaction? (1 point)
Find the mass of an acid and a base. Combine them to produce water and a salt. Find the mass of the water and salt.
O Find the mass of a stick of butter. Heat the butter until it melts. Find the mass of the melted butter.
O Find the mass of a log. Burn the log until it turns to ash and smoke. Find the mass of the ash.
O Find the mass of a piece of paper. Tear the paper into smaller pieces. Find the mass of the pieces.
Find the mass of an acid and a base. Combine them to produce water and a salt. Find the mass of the water and salt.
The correct answer is:
Find the mass of an acid and a base. Combine them to produce water and a salt. Find the mass of the water and salt.
The correct answer is:
- Find the mass of an acid and a base. Combine them to produce water and a salt. Find the mass of the water and salt.
To demonstrate that matter is conserved during a chemical change or reaction, one can use the procedure of finding the mass of the reactants and products. This is known as the law of conservation of mass. According to this law, the total mass of the reactants in a chemical reaction is equal to the total mass of the products.
In this specific procedure, you start by measuring the mass of an acid and a base separately. Then, you combine them to initiate a chemical reaction. In this reaction, the acid and base react to produce water and a salt. Finally, you measure the masses of the water and salt formed.
By comparing the mass of the reactants to the mass of the products, you can observe that the total mass before the reaction is the same as the total mass after the reaction. This verifies the conservation of matter in a chemical change or reaction.