N5 Chemistry in Society REVISION

Which metal reacts fastest with Oxygen?

• Copper

• Zinc

• Magnesium

• Gold

Name a product of a metal reacting with acid.

What is the IONIC formula for hydrochloric acid?

• HCl

What direction is the electricity flow?

• Zinc to copper

• Copper to Zinc

Calculate the percentage by mass of nitrogen in Ammonium nitrate NH₄NO₃

What type of reaction is this?

What fraction of a sample of uranium-238 would be left after 22.5 billion years? (Half-life of uranium-238 is 4.5 billion years)

What is element X?

What type of radiation has the highest penetrating power?

• alpha

• beta

• gamma