About Chemistry Quiz #844
Chemistry Quiz #844 was the quiz for Saturday, October 24, 2026: 10 questions: 3 easy, 4 medium and 3 hard. Everyone who played Chemistry Quiz that day got the same quiz, and it stays here to play for 60 days.
The questions of Chemistry Quiz #844
- Which particle in an atom has a positive charge?
- Which substance has the chemical formula H₂O?
- What is it called when a gas turns into a liquid?
- Why does ice float on water?
- Which method separates salt from seawater by heating?
- Who invented dynamite and left his fortune to fund famous international prizes?
- What does salt do to the freezing point of water?
- What is it called when a gas turns straight into a solid, like frost forming?
- What is the chemical name for quicklime?
- A reaction that takes in heat, like an instant cold pack, is called what?
The answer options and the answers appear only when you play the quiz, one question at a time.
New to Chemistry Quiz? The rules, tips and common questions are on the Chemistry Quiz page, and Periodic Table Memory Tips for the Quiz goes into strategy.
Other days of Chemistry Quiz
- Chemistry Quiz #847, Oct 27
- Chemistry Quiz #846, Oct 26
- Chemistry Quiz #845, Oct 25
- Chemistry Quiz #843, Oct 23
- Chemistry Quiz #842, Oct 22
- Chemistry Quiz #841, Oct 21
- Today’s quiz, #851
Every day of the last 60 is in the puzzle archive.