Substance that turns litmus paper red Crossword Clue

Here is the answer for the crossword clue Substance that turns litmus paper red last seen in USA Today puzzle. We have found 40 possible answers for this clue in our database. Among them, one solution stands out with a 98% match which has a length of 4 letters. We think the likely answer to this clue is ACID.

Crossword Answer For Substance that turns litmus paper red:

40 Potential Answers:

Rank	Answer	Length	Source	Date
98%	ACID Substance that turns litmus paper red	(4)	USA Today	Dec 23, 2021
45%	ACIDS Chemical substances that turn litmus paper red	(5)
4%	ACIDIC ____ substances turn litmus paper red	(6)	The Times Specialist Sunday	May 20, 2018
3%	DYES Turns red, say	(4)	New York Times	Oct 8, 2025
3%	ALKALI Substance that turns litmus paper blue	(6)
3%	BASE It turns red litmus paper blue	(4)	New York Times	Jan 25, 2022
3%	BASES They turn red litmus paper blue	(5)	Universal	Jul 1, 2020
2%	OLEO Fatty substance	(4)	The Telegraph Cross Atlantic	Oct 9, 2025
2%	ESSAY School paper	(5)	Thomas Joseph	Oct 7, 2025
2%	BILL Paper invoice	(4)	Newsday	Oct 6, 2025

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Your Crossword Clues FAQ Guide

What is the answer of Substance that turns litmus paper red Crossword Clue?

An acid is a substance that, when dissolved in water, releases hydrogen ions. Litmus paper turns red in the presence of acids due to the change in pH. Acids are common in everyday items like citrus fruits and vinegar.