Atomic Mass Unit (AMU): Definition, Standard & Conversion


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question 1 of 3

Atomic mass units (amu) are defined as _____.

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1. Before carbon-12 was used as the standard for atomic mass units, _____ and _____ were previously used as standards.

2. Isotopes of an element have the same number of _____, but a different number of _____.

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About This Quiz & Worksheet

The quiz and worksheet will gauge your understanding of atomic mass unit standard and conversion. You'll need to grasp concepts like defining atomic mass units in order to pass the quiz.

Quiz & Worksheet Goals

Use these assessment tools to:

  • Analyze the properties of an isotope with regard to what it contains
  • Convert atomic mass units into kilograms
  • Identify elements in a compound

Skills Practiced

Here are a few of the skills that you can practice with these assessments:

  • Critical thinking - apply relevant concepts to examine information about atomic mass units in a different light
  • Problem solving - use acquired knowledge to solve atomic mass conversions practice problems
  • Interpreting information - verify that you can read information regarding isotopes and interpret it correctly
  • Defining key concepts - ensure that you can accurately define main terms, such as atomic mass unit

Additional Learning

Would you care to know more about atomic mass unit standard and conversion? Then this lesson, Atomic Mass Unit (AMU): Definition, Standard & Conversion, will be greatly informative for your instruction. Once you have finished the lesson, you will have learned the following objectives:

  • Analyze atoms and molecules
  • Interpret the periodic table of elements
  • Define isotopes
  • Understand why carbon is known as a 'standard'
  • Define mole and Avogadro's constant