which procedure could be used to demonstrate that matter is conserved during a chemical change or reaction?
a. 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.
b. Find a mass of a log. Burn the log until it turns to ash and smoke. Find the mass of the ash.
c. Find the mass of a stick of butter. Heat the butter until it melts. Find the mass of the melted
butter.
d. Find the mass of a piece of paper. Tear the paper into smaller pieces. Find the mass of the pieces.