Atomic Number and Mass Number


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question 1 of 3

ALL atoms of the same element have:

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1. If Atom #1 has 19 protons and 22 neutrons, and Atom #2 has 20 protons and 22 neutrons, are these isotopes of the same element?

2. Which element has a mass number of 12 and contains 6 neutrons?

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About This Quiz & Worksheet

There's quite a lot to be learned about atoms. This article and quiz focuses on just some of that, by asking you to recall facts about the atomic number and mass number.

Quiz & Worksheet Goals

This quiz helps you test your knowledge of the lesson's topic in the following ways:

  • Understand what atoms of the same element have in common
  • Recognize if two isotopes are of the same element
  • Recognize an element by its mass number and number of neutrons
  • Know the charge of the nucleus
  • Understand what a mass number indicates

Skills Practiced

  • Reading comprehension - draw the most relevant information from the lesson about the atomic number and mass number
  • Critical thinking - use your knowledge to figure out if two isotopes are of the same element
  • Information recall - remember what you've learned about identifying elements based on their atomic number and mass number

Additional Learning

More on the subject can be found in the lesson on Atomic Number and Mass Number, which covers the following objectives:

  • Define atom, element and subatomic particles
  • Know what the periodic table is
  • Differentiate between protons, neutrons and electrons
  • Define nucleus and isotopes
  • Understand how to calculate the atomic number and the mass number