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Tutor HuntTest QuestionsChemistry QuestionsYear 10 Chemistry Questions

 

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.
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Below a typical questions that will be covered in this test. You final score will be logged on your account

Which statement about isotopes is correct for a given element?
A student has 2.00 g of oxygen-16 atoms (Ar = 16). How many moles of oxygen atoms does the student have?
Which of these best explains why atomic radii generally increase going down a group in the periodic table?
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?
Which statement about atomic structure is false?
Which piece of information is needed to calculate Ar from isotopic data?
How many protons, neutrons and electrons are present in a neutral atom of sulphur-34?
How does the number of electrons in the outer shell change across Period 3 (from sodium to argon)?
A sample contains 90.00% isotope A (mass 35) and 10.00% isotope B (mass 37). What is the relative atomic mass (Ar) of the element (to two decimal places)?
A sample contains 25% isotope A (mass 30) and 75% isotope B (mass 32). What is the approximate Ar of the element?
If 0.50 mol of carbon-12 atoms is present, how many atoms does this represent? (Avogadro constant = 6.02 × 10^23 mol-1)