Substance That Precipitates a Chemical Reaction
This page is the CodyCross answer for the clue below from Pet Shop, Group 358, Puzzle 2 (Pick Up Bags).
Question is: Substance That Precipitates a Chemical Reaction
and the answer is: CATALYST
Word Meaning:
CATALYST — (chemistry) A substance that increases the rate of a chemical reaction without being consumed in the process.
Definitions from Wiktionary.