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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 student has 2.00 g of oxygen-16 atoms (Ar = 16). How many moles of oxygen atoms does the student have?
Which statement about isotopes is correct for a given element?
Which of these shows the correct relationship between mass number (A), proton number (Z) and neutron number (N)?
An atom of carbon-12 has 6 protons and 6 neutrons. What is the mass number and what does it represent?
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?
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?
What is the atomic mass unit (1 u) defined approximately as?
Why do ions of an element have a different mass to the neutral atom?
Which periodic trend is most closely associated with increasing atomic mass across a period?
How many protons, neutrons and electrons are present in a neutral atom of sulphur-34?
Which is the correct definition of an isotope?
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