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Exams & Certifications

Chemistry Quizzes, Questions & Answers

Recent Chemistry Quizzes

Water - The Essential Substance

Questions: 20 | Attempts: 358 | Last updated: Mar 21, 2025

Sample Question
Water is a simple chemical compound, each molecule composed of one oxygen and two ____________ atoms. Why, then, is it so important? Most fundamentally, water is essential for life. Every living organism on earth must have water in some form in order to survive. Every living cell is composed primarily of water. When space probes are dispatched to other planets in search of other life forms, they look for the presence to water to determine if life, as we know it, is possible there.

Nitrogen

Iron

Phosphorus

Hydrogen

Helium

Iha Education June Webinar - Syngenta - Chemicals

Questions: 10 | Attempts: 73 | Last updated: Sep 13, 2025

Sample Question
How do you distinquish forms of Whitefly?

Color

Wing shape

Plant preference

GCSE Core Chemistry Quiz

Questions: 10 | Attempts: 4755 | Last updated: Mar 11, 2025

Sample Question
What does sulfur dioxide cause?

Global dimming

Global Warming

Acid rain

Climate changes

Chemistry Regents Exam Practice Test

Questions: 22 | Attempts: 18960 | Last updated: Jun 19, 2025

Sample Question
Compared to the charge and mass of a proton, an electron has...

The same charge and a smaller mass.

The same charge and the same mass.

An opposite charge and a smaller mass.

An opposite charge and the same mass.