9th Grade Molecular Dynamics Quizzes, Questions & Answers

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Atoms, Periodic Table Quiz

This Quiz will ask you questions about all the topics in Chemistry we've studied on the following topics: *Atoms and Atomic Structure *The Periodic Table and its Organization *Elements and Atoms *Naming and Symbols...

Questions: 23 | Attempts: 296 | Last updated: Mar 21, 2025

Sample Question 1
Water has a chemical formula of H2O. Is it an element?

Yes, it is in its simplest form and cannot be broken down into something simpler.

Yes, it is an element like fire, water, or earth.

No, it is not an element because it can be broken down into two simpler substances: Hydrogen (H) and Oxygen (O).

No, because water is not a chemical.

Sample Question 2
Which of these is the word we use to describe the vertical, up-and-down columns of the Periodic Table?

Groups or Families

Periods

Element types

Lanthanides

Sample Question 3
What is the difference between atomic mass and atomic number?

Atomic mass includes the protons, and atomic number does not.

Atomic mass includes the neutrons, and atomic number does not.

Atomic number includes the electrons, and atomic mass does not.

Actually, atomic mass and atomic number are the same thing, so there is no difference.