Chemistry 1 - Answers

Published: Sunday 24th July 2016
  1. Of which element is Ozone an naturally occurring form? Oxygen.
  2. Which gas is manufactured industrially using the Haber-Bosch process? Ammonia.
  3. By what name is Group 17 in the Periodic Table also known? The Halogens.
  4. In which country is the village of Ytterby, after which four elements are named? Sweden.
  5. Which is the most abundant element in our universe? Hydrogen.
  6. What was the first new element discovered by Marie Curie? Polonium.
  7. By what name is the centre of an atom known? Nucleus.
  8. Which element has the chemical symbol K? Potassium.
  9. What name is given to atoms of the same element that have a different atomic mass? Isotopes.
  10. Which element was know as "Brimstone"? Sulphur.
  11. Named after the Greek for "Carrying Light", which element has the Atomic Number 15? Phosphorus.
  12. What is the hardest form of the element Carbon? Diamond.
  13. Which chemical substances have a pH of less than seven? Acids.
  14. Which element is often referred to as "Quicksilver"? Mercury.
  15. Which chemical element has the symbol Cr? Chromium.
  16. Which is the Earth's most abundant metal? Aluminium.
  17. The atomic number of an element is equal to the number of which particles in an atom? Protons.
  18. Who is credited with the first Periodic Table of Elements? Mendeleev.
  19. What are the products of a reaction between an acid and a base? A salt and water.
  20. Which element has a name meaning "The Sun" in Greek? Helium.

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