1. What is the chemical symbol for gold?
  2. What is the pH value of a neutral solution?
  3. Which element is the most abundant in Earth’s atmosphere?
  4. What is the chemical formula for water?
  5. What is the process by which a solid changes directly into a gas without becoming a liquid first?
  6. What is the lightest element in the periodic table?
  7. What is the chemical name for baking soda?
  8. Which gas is produced during the process of photosynthesis?
  9. What is the name for a substance that speeds up a chemical reaction but is not consumed in the process?
  10. What is the noble gas used in balloons to make them float?


  1. Au
  2. 7 (pH 7)
  3. Nitrogen (N2)
  4. H2O
  5. Sublimation
  6. Hydrogen (H)
  7. Sodium bicarbonate (NaHCO3)
  8. Oxygen (O2)
  9. Catalyst
  10. Helium (He)



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