Periodic Table Mock Tests

4 questions available

Periodic Table Mock Test 1

Questions: 4

DSC Science

Why do all elements in the same group of the periodic table show similar chemical properties?

A They have the same atomic mass

B They have the same number of protons

C They have the same number of valence electrons

D They have the same number of electron shells

DSC Science

What happens to the atomic size as we move from left to right across a period in the periodic table?

A Atomic size increases

B Atomic size decreases

C Atomic size remains the same

D Atomic size first increases, then decreases

DSC Science

What is the basis of the modern periodic law?

A Atomic mass

B Number of neutrons

C Atomic number (number of protons)

D Number of isotopes

DSC Science

Why are noble gases (Group 18 elements) chemically inert (unreactive)?

A They have very large atomic sizes

B They have the maximum number of valence electrons (8, or 2 for helium), making their outermost shell complete

C They have very high ionisation energies that prevent any chemical reaction

D They are all gases at room temperature

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