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Size And Mass Of Atoms (GCSE Chemistry)
The following is a GCSE Chemistry test covering 'Size And Mass Of Atoms' from the broader topic Atomic Structure And The Periodic Table. The test is geared towards the AQA exam board style syllabus.Incorrect: 0
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Which measurement is closest to the diameter of a typical atom?
Why is relative atomic mass on the periodic table often not a whole number?
Which statement about atomic structure is false?
Two elements X and Y are in the same period. X has a smaller atomic radius than Y. Which of the following explanations is most likely?
What does a mass spectrometer measure directly to determine the relative atomic mass of an element?
Why is the mass of an electron usually ignored when calculating the relative atomic mass of an atom?
A sample contains 25% isotope A (mass 30) and 75% isotope B (mass 32). What is the approximate Ar of the element?
Which of these statements correctly describes how the relative atomic mass (Ar) of an element is calculated when the element has two naturally occurring isotopes?
An atom of carbon-12 has 6 protons and 6 neutrons. What is the mass number and what does it represent?
Which particle contributes almost all of an atom’s mass?
Which of the following experiments first led to the discovery of the electron?
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