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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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A sample contains 25% isotope A (mass 30) and 75% isotope B (mass 32). What is the approximate Ar of the element?
Which piece of information is needed to calculate Ar from isotopic data?
Which of these best explains why atomic radii generally increase going down a group in the periodic table?
Which of these shows the correct relationship between mass number (A), proton number (Z) and neutron number (N)?
Which is the correct definition of an isotope?
Which periodic trend is most closely associated with increasing atomic mass across a period?
Which of the following correctly orders particles by approximate mass (largest to smallest)?
What does a mass spectrometer measure directly to determine the relative atomic mass of an element?
What is the atomic mass unit (1 u) defined approximately as?
If 0.50 mol of carbon-12 atoms is present, how many atoms does this represent? (Avogadro constant = 6.02 × 10^23 mol-1)
A chemist measures a sample and finds the average atomic mass is 40.08. Which element is most likely present?
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