Which procedure could be used to demonstrate that matter is conserved during a chemical change or reaction?(1 point)

Question

Responses

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 a log. Burn the log until it turns to ash and smoke. Find the mass of the ash.
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.
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.

Answer 1

The best procedure to demonstrate that matter is conserved during a chemical change or reaction 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.

This experiment shows a chemical change where two substances (the acid and base) react to form new substances (water and salt). Measuring the mass before and after the reaction allows you to demonstrate the conservation of mass, as the total mass should be the same before the reaction and after the products have formed.