Which procedure could be used to demonstrate that matter is conserved during a chemical change or reaction?(1 point)
Pick one
Responses Find the mass of a piece of paper. Tear the paper into smaller pieces. Find the mass of the pieces. Find the mass of a piece of paper. Tear the paper into smaller pieces. Find the mass of the pieces. Find the mass of a stick of butter. Heat the butter until it melts. Find the mass of the melted butter. Find the mass of a stick of butter. Heat the butter until it melts. Find the mass of the melted butter. 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. 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. Find the mass of a log. Burn the log until it turns to ash and smoke. Find the mass of the ash.
Find the mass of a piece of paper. Tear the paper into smaller pieces. Find the mass of the pieces.
The procedure that could be used to demonstrate that matter is conserved during a chemical change or reaction is: Find the mass of a log. Burn the log until it turns to ash and smoke. Find the mass of the ash.
The procedure that can be used to demonstrate that matter is conserved during a chemical change or reaction is to find the mass of the reactants before the reaction and then find the mass of the products after the reaction. Comparing the mass of the reactants to the mass of the products will show if matter is conserved.
For example, in the options provided:
- Find the mass of a piece of paper, tear it into smaller pieces, and find the mass of the pieces. This procedure does not involve a chemical change or reaction, so it does not directly demonstrate the conservation of matter.
- Find the mass of a stick of butter, heat it until it melts, and find the mass of the melted butter. This procedure also does not involve a chemical change or reaction, but a change of state. Therefore, while mass is conserved, it does not directly demonstrate the conservation of matter during a chemical reaction.
- Find the mass of an acid and a base, combine them to produce water and a salt, and find the mass of the water and salt. This procedure involves a chemical reaction and shows that matter is conserved, as the mass of the reactants is equal to the mass of the products.
- Find the mass of a log, burn it until it turns to ash and smoke, and find the mass of the ash. This procedure also involves a chemical reaction, and if the mass of the ash is equivalent to the mass of the original log, it demonstrates the conservation of matter.